Choosing a marine chartplotter is about more than screen size: the unit has to work with your boat’s transducers, charts, autopilot, and other electronics. The Garmin GPSMAP 1243xsv and Lowrance HDS PRO are premium multifunction displays aimed at boaters who want navigation and sonar in one system. Both offer touchscreen operation, networking, and chart support, but their ecosystems and sonar options differ.
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Simrad GO9 XSE Chartplotter and Fish Finder with Transducer, Radar Options and Preloaded C-MAP Discover Card
- ✔ Display: Nine-inch multi-touch
- ✔ GPS: Built-in 10 Hz receiver
- ✔ Chart card: C-MAP Discover, US and Canada
Garmin ECHOMAP UHD2 93sv with GT56 Transducer, 9-inch Touchscreen Chartplotter, Garmin Navionics+ U.S. Inland
- ✔ Display: Nine-inch touchscreen
- ✔ Included transducer: Garmin GT56
- ✔ Sonar: Traditional, ClearVü, and SideVü
Garmin ECHOMAP UHD2 54CV Chartplotter/Fishfinder with US Coastal Maps and GT20-TM Transducer
- ✔ Display: Five-inch keyed display
- ✔ Sonar: Garmin CHIRP traditional and ClearVü scanning
- ✔ Maps: US coastal and inland chart support
Garmin is the more natural choice if you already use Garmin equipment or prefer its charting and interface. Lowrance is compelling for anglers who want its sonar tools and a large display, especially in the HDS PRO’s bigger sizes. Neither is a universal winner: compatibility with the electronics already installed on your boat can matter more than a feature comparison.
At a Glance
| Criteria | Garmin GPSMAP 1243xsv | Lowrance HDS PRO | Winner |
|---|---|---|---|
| Sonar capability | Built-in sonar features vary by model; supports compatible Garmin transducers and sonar modules. | Supports compatible Lowrance transducers and sonar systems, with features dependent on connected hardware. | Depends |
| Display choices | 12-inch touchscreen in this model; the GPSMAP 1243xsv line is available in other sizes. | HDS PRO family includes several sizes, including large displays suited to helm or fishing use. | B |
| Charting | Supports Garmin charts and compatible chart formats; coverage depends on chart purchase and region. | Supports compatible C-MAP and other chart products; exact coverage depends on region and chart package. | Depends |
| Networking and compatibility | Integrates most readily with compatible Garmin devices; verify connections and features before mixing brands. | Best aligned with compatible Lowrance and supported marine electronics; check network protocols and device support. | Depends |
| Everyday operation | Familiar to Garmin users, with touchscreen controls and customizable pages. | Touchscreen-centered interface with Lowrance fishing and sonar tools. | Depends |
| Value | Good value for an existing Garmin owner who can reuse compatible equipment. | Worth the premium when its screen, sonar workflow, or existing Lowrance gear will be used. | Depends |
Simrad GO9 XSE Chartplotter and Fish Finder with Transducer, Radar Options and Preloaded C-MAP Discover Card
The GO9 XSE is the most balanced choice in this group for boaters who want navigation and fish finding on one display. Its nine-inch multi-touch screen leaves more room for chart detail than Garmin’s five-inch 54CV, while the included C-MAP Discover card covers the US and Canada. That wider stated regional coverage gives it an edge for boaters whose trips cross between those areas, though chart coverage should still be checked against the specific waters and detail needed.For fishing, the included 83/200 kHz HDI transducer supports CHIRP sonar and DownScan imaging, so we can use the same unit to follow a route and inspect underwater structure. Built-in Wi-Fi and NMEA 2000 also make it more adaptable to a connected helm than the 54CV, whose wireless sharing is limited to compatible ECHOMAP UHD2 chartplotters. Simrad’s radar compatibility adds an upgrade path for small cruisers and sportboats.The important limitation is that automatic routing is unavailable in the USA, so US buyers should not choose this unit expecting EasyRouting or AutoRouting to plan their route. Its larger footprint also needs more mounting room than the compact Garmin. Compared with the 93sv, the Simrad has broader stated US and Canada chart coverage, while Garmin supplies SideVü sonar in its package; choose based on whether regional navigation flexibility or side-looking sonar matters more.
Pros:
- Nine-inch multi-touch display gives charts and sonar more screen area.
- Preloaded C-MAP Discover card covers the US and Canada.
- Included 83/200 kHz HDI transducer supports CHIRP and DownScan.
- Wi-Fi, NMEA 2000, and compatible Simrad radar options support system expansion.
Cons:
- EasyRouting and AutoRouting are not available in the USA.
- Larger screen requires more mounting space than the five-inch Garmin.
- The included sonar setup does not list SideVü imaging like the Garmin 93sv package.
Best for: Sportboat, center-console, and small-cruiser owners who want a larger all-in-one display, included US and Canada charts, and an upgrade path to radar.
Not ideal for: US boaters who require automatic route generation, or owners with limited helm space who prefer a compact keyed display.
Bottom line: We recommend the GO9 XSE as the most versatile chartplotter here when broad US and Canada coverage and a larger multifunction screen matter more than US automatic routing.
“We recommend the GO9 XSE as the most versatile chartplotter here when broad US and Canada coverage and a larger multifunction screen matter more than US automatic routing.”
Garmin ECHOMAP UHD2 93sv with GT56 Transducer, 9-inch Touchscreen Chartplotter, Garmin Navionics+ U.S. Inland
For inland anglers who want sonar detail without giving up a roomy navigation display, the ECHOMAP UHD2 93sv is the strongest specialist in this lineup. Its nine-inch touchscreen matches the Simrad’s screen size, but the supplied GT56 transducer adds traditional, ClearVü, and SideVü sonar. SideVü is the differentiator: it helps anglers scan structure to either side of the boat, while the Simrad’s listed package emphasizes CHIRP and DownScan.The tradeoff is the chart bundle. This model includes Navionics+ US inland maps, with stated coverage of more than 18,000 US lakes. That’s a useful fit for inland trips, but it is a narrower starting point for coastal or cross-border use than the Simrad’s US and Canada card. Buyers should verify that their intended waters are covered before choosing it as a primary navigation display.At 7.9 pounds, it also calls for a secure mounting position and more console room than the five-inch 54CV. Wi-Fi shares waypoints and routes between chartplotters, but the listed details do not promise the broader NMEA 2000 or radar compatibility offered by the Simrad. We would choose the 93sv when inland sonar views and readable chart space outrank geographic flexibility or system expansion.
Pros:
- Nine-inch touchscreen gives charts and sonar room to remain legible.
- GT56 supports traditional, ClearVü, and SideVü sonar.
- Navionics+ maps include extensive US inland lake coverage.
- Wi-Fi supports waypoint and route sharing between compatible chartplotters.
Cons:
- Included mapping is focused on US inland waters.
- Larger, heavier unit needs more mounting space than the 54CV.
- Wireless sharing is described for chartplotters, not as broad NMEA 2000 or radar integration.
Best for: Inland anglers who want a large touchscreen, side-looking sonar, and included mapping for US lakes.
Not ideal for: Boaters who need included coastal or Canadian chart coverage, or a compact unit for a crowded helm.
Bottom line: The 93sv is our pick for inland anglers who will use SideVü often and can work within its US inland chart focus.
“The 93sv is our pick for inland anglers who will use SideVü often and can work within its US inland chart focus.”
Garmin ECHOMAP UHD2 54CV Chartplotter/Fishfinder with US Coastal Maps and GT20-TM Transducer
The ECHOMAP UHD2 54CV is the practical choice when a small helm matters more than seeing a wide chart view. Its five-inch keyed display takes less space and gives us physical controls, which can be preferable when reaching for a touchscreen is awkward. It includes US coastal maps plus LakeVü g3 inland map support and BlueChart g3 coastal charts, making it a more geographically flexible starting point than the 93sv’s inland-focused Navionics+ package.Sonar includes Garmin CHIRP traditional and ClearVü scanning, with vivid palettes to distinguish targets and structure. That covers the core needs of a coastal or inland recreational boater, but the included GT20-TM and listed sonar modes are a simpler package than the 93sv’s GT56 with SideVü. The smaller screen also means more panning or switching views when chart details and sonar compete for attention; the GO9 XSE and 93sv are easier to read at a glance.Its wireless sharing is limited to compatible ECHOMAP UHD2 chartplotters, and some app features depend on a compatible smartphone running ActiveCaptain. This is a focused compact unit rather than an expandable centerpiece. Choose it when the display’s size and keyed controls fit the boat, and skip it if a large chart view or richer sonar coverage is central to your plans.
Pros:
- Compact five-inch keyed display fits tighter helm layouts.
- Includes US coastal and inland map support.
- CHIRP traditional sonar and ClearVü scanning are included.
- Compatible UHD2 units can share sonar, waypoints, and routes wirelessly.
Cons:
- Small screen provides less chart and sonar viewing area than either nine-inch option.
- Wireless sharing is limited to compatible ECHOMAP UHD2 chartplotters.
- Some app functions require a compatible smartphone and ActiveCaptain.
Best for: Recreational boaters with limited console space who want keyed controls, coastal and inland chart support, and core sonar functions.
Not ideal for: Anglers seeking SideVü or boaters who want a large display for reading charts and sonar simultaneously.
Bottom line: The 54CV is the right fit when compact dimensions and physical keys outweigh the visibility and sonar range of the larger models.
“The 54CV is the right fit when compact dimensions and physical keys outweigh the visibility and sonar range of the larger models.”
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Key Differences
The largest practical difference is the surrounding system. A chartplotter’s headline capabilities depend on the chart card, transducer, and network devices connected to it. If your boat already has Garmin sonar or autopilot, the GPSMAP can reduce duplication and make setup simpler. The same is true of HDS PRO on a boat built around Lowrance. Mixing brands can work, but supported functions, cables, and networking standards need checking before purchase.
For fishing, neither display alone guarantees better sonar results. Transducer type and placement, water conditions, and the specific sonar module often shape performance more than the unit name. HDS PRO offers a range of screen sizes, including large formats attractive for split-screen sonar and chart viewing. Garmin’s 1243xsv is a defined 12-inch option, which may suit a helm where space is limited. Chart quality is similarly tied to the regional chart package: compare the waters you actually travel, not just the brand label.
Value depends on what you can reuse. A compatible transducer, chart card, or network connection can make staying within one brand less expensive and less complicated. If starting fresh, compare the complete installed system rather than the display price alone. Pay extra for the Lowrance or Garmin package only when its screen size, tools, or ecosystem solve a real need on your boat.
Detailed Comparison
Sonar capability (moderate difference)
Both units can serve as the center of a fishing setup, but the result depends on the transducer and sonar hardware paired with the display. Garmin wins for an owner already using compatible Garmin sonar; Lowrance wins for someone invested in compatible Lowrance equipment and workflows. The gap is moderate for ecosystem users and small for a new buyer comparing equivalent transducers. Check supported sonar modes and transducer connections for the exact model before buying.
Display choices (Lowrance HDS PRO wins — moderate)
The GPSMAP 1243xsv provides a 12-inch touchscreen. HDS PRO is sold in multiple sizes, including larger formats that can make charts and sonar easier to view together. Lowrance wins on screen-size flexibility, a moderate difference for anglers who value split-screen space. For a compact helm, the 12-inch Garmin may be the better fit; measure the mounting area before deciding.
Charting (major difference)
Both accept chart products that vary by region, coverage, and detail. Neither brand has a clear universal advantage: Garmin is the straightforward choice for someone with existing Garmin charts, while Lowrance suits a boater whose preferred coverage is available through its supported chart options. This is a major practical criterion in unfamiliar or shallow waters. Compare specific chart regions and update terms before paying for a display.
Networking and compatibility (major difference)
Each display is easiest to integrate with compatible equipment from its own ecosystem. Garmin takes the lead on a Garmin-equipped boat, and Lowrance on a Lowrance-equipped boat. The difference is major if you expect to connect autopilot, radar, engine data, or existing sonar. Compatibility varies by product generation and network; verify each device and required adapter rather than assuming two products from one brand will work together.
Everyday operation (minor difference)
Both provide touchscreen control and customizable views, so familiarity is likely to determine which feels simpler. Garmin has the edge for users accustomed to its menus; Lowrance for users who already know its interface and fishing tools. The gap is minor for a first-time buyer because learning and preference matter more than a paper specification. If possible, handle the display in person and check whether it can be operated comfortably at your helm.
Value (moderate difference)
Neither is automatically the better bargain on display price alone. Garmin can deliver stronger value when a buyer can reuse Garmin accessories, charts, and network devices. Lowrance can justify its cost when the buyer needs its larger-screen options or has compatible Lowrance equipment. The gap is moderate and depends on the full installation bill. Price the display, charts, transducer, mounts, and any needed adapters together.
Garmin GPSMAP 1243xsv: Pros and Cons
Pros:
- 12-inch size can suit a helm with limited mounting space.
- Natural fit for compatible Garmin charts, sonar, and network equipment.
- Familiar option for boaters already using Garmin.
Cons:
- The 1243xsv is a fixed 12-inch choice; buyers seeking a much larger screen need another model.
- Sonar performance and available modes depend on compatible connected hardware.
- Mixing brands can add setup and compatibility work.
Lowrance HDS PRO: Pros and Cons
Pros:
- Several display sizes provide flexibility, including larger screens for split views.
- Strong fit for existing Lowrance owners and compatible sonar equipment.
- Fishing-oriented tools and display options appeal to anglers.
Cons:
- Larger models may require more helm space and a higher total system budget.
- Features depend on supported charts, transducers, and connected devices.
- Less compelling if the boat is already built around Garmin equipment.
Who Should Choose What
Choose Garmin GPSMAP 1243xsv if:
- Your boat already uses compatible Garmin sonar, charts, or network equipment.
- A 12-inch touchscreen fits your helm and viewing needs.
- You want to keep a Garmin-centered navigation and electronics setup.
Choose Lowrance HDS PRO if:
- You want the choice of a larger display for charts and sonar side by side.
- Your boat uses compatible Lowrance equipment or you prefer its fishing workflow.
- You have confirmed that your preferred chart coverage is available for your waters.
Skip both if: You need a basic navigation display, have a tight budget, or cannot confirm compatibility with your boat’s existing transducer and electronics; compare simpler units or have an installer specify a complete system.
Value for Money
Paying for a premium display makes sense when you will use its sonar, networking, or large-screen navigation often. It is poor value to buy either model for headline features that require additional hardware you do not plan to purchase. For an existing Garmin or Lowrance owner, staying in the same ecosystem may save money and installation effort through compatible equipment. A new buyer should compare the full system cost, including chart coverage, transducer, mounts, cables, and any modules. Lowrance merits the extra outlay when its larger screen or established setup improves real fishing use; Garmin is the better value when it integrates with equipment already aboard.
Final Verdict
For most buyers, choose the display that fits the boat’s existing electronics and the waters you navigate. Choose Garmin GPSMAP 1243xsv if you have compatible Garmin gear or want a 12-inch unit for a Garmin-centered setup. Choose Lowrance HDS PRO if you want more screen-size options, especially a larger view for fishing, or already run compatible Lowrance electronics. The biggest deciding factor is system fit, followed by screen size and chart coverage. Do not pay more for a larger display or advanced sonar until you have confirmed the installation space and hardware required.
Frequently Asked Questions
Which chartplotter is better for fishing?
Neither wins for every angler. Match the display to the transducer and sonar modes you need, then compare the chart coverage for your fishing waters. Existing equipment often makes the decision straightforward.
Can Garmin and Lowrance equipment work together?
Some marine devices can share data through supported network standards, but compatibility varies by product and function. Check the exact model specifications, required adapters, and whether the data you need will be available before mixing brands.
Is a larger HDS PRO screen worth paying more for?
It can be worthwhile if you regularly view charts and sonar together and have helm space for the display. If you mainly need navigation or have a compact console, a smaller unit may deliver better value.
What should I check before buying either unit?
Confirm chart coverage for your region, transducer support, mounting dimensions, power requirements, and compatibility with radar, autopilot, and other devices you plan to connect. Add these items to the display price when comparing value.
