The Day I Almost Bought the Wrong Brand
I still remember standing in a marine electronics store, staring at two walls of screens. On one side, Garmin—bright, familiar, with the same menu I'd used for years. On the other, Simrad—sleek, modern, and a little intimidating. A salesman was talking at me about "ecosystem integration" and "future-proofing," but all I could think about was which system would make my life easier on the water. I'd been running Garmin for years, but my buddy swore by his Simrad, and he'd been catching more fish than me lately. Was it the electronics or the fisherman? I wasn't sure. So I did what any sensible captain would do: I bought both and tested them side by side on my charter boat. That was two years ago. I've been running them ever since, swapping units in and out, and I've learned a lot about where each brand shines and where it stumbles.
This isn't a spec-sheet comparison. It's what I've learned from thousands of hours running both systems in the Gulf of Mexico, in sun, rain, and rough seas. If you're trying to decide between Garmin and Simrad, this guide will help you make a choice you won't regret. No brand loyalty here—just honest experience from a guy who has to live with this gear every single day.
Why You Should Trust Me
I'm Jake Morrison. I've run a fishing charter out of Pensacola for 15 years, and I've logged over 4,000 hours staring at chartplotters. I've owned Garmin, Simrad, Lowrance, and Humminbird units, and I've installed them on other people's boats. I don't sell electronics, and I don't take money from any manufacturer. Some of the links in this guide pay me a commission if you buy through them, but that doesn't change what I write. I've recommended both brands to different people, depending on their needs. That's the whole point—there's no one-size-fits-all. Read this, figure out what matters to you, and then choose accordingly. I'll tell you what I'd pick for my own boat, and why.
If that filtered list is empty, try this unfiltered search. And for budget alternatives, check DHgate—prices are lower, but shipping takes longer and quality varies, so read reviews carefully.
Interface: Buttons vs Touchscreen
The first thing you'll notice is how you interact with the unit. Garmin's newer models, like the GPSMAP series, use a hybrid approach: a touchscreen plus a rotary knob and hard buttons. That knob is a lifesaver when you're bouncing through a 3-foot chop with wet hands. You can make precise adjustments without taking your eyes off the water. I've lost count of how many times I've been grateful for that knob when trying to mark a waypoint in rough seas. It just works.
Simrad, on the other hand, leans heavily on the touchscreen. Their GO and NSS series have beautiful, responsive screens, and in calm conditions they're a joy to use. But add some spray and a rolling deck, and you'll find yourself tapping the same spot three times. Simrad does have some physical buttons, but the interface is designed around touch. If you fish mostly calm lakes or have a very stable boat, you'll be fine. But if you run offshore in rough water, the Garmin's knob is a genuine advantage. I've missed marking waypoints because the Simrad registered a swipe instead of a tap, and in fishing, a missed waypoint can mean a missed fish.
Sonar and Imaging: Simrad's Strength
When it comes to raw sonar detail, especially structure imaging, Simrad is hard to beat. Their technology, shared with Lowrance and B&G, delivers some of the best bottom detail I've seen. The StructureScan 3D on their NSS evo3S units is remarkable—you can see ledges, drop-offs, and rock piles in a way that makes you feel like you're looking at a photograph of the bottom. I found new fishing spots in areas I'd been running over for years. The side-scan and down-scan are also excellent, with crisp target separation. If you're a serious structure fisherman, Simrad gives you an edge.
Garmin's sonar is very good, but it's slightly less detailed than Simrad's best. The GT56 transducer, included with many GPSMAP units, delivers excellent CHIRP, side-scan, and down-scan, but it doesn't quite match the 3D clarity of Simrad's StructureScan. For most anglers, the difference won't be deal-breaking. But if you're the type who stares at the screen and wants to see every detail of the bottom, Simrad wins this round. I've had clients ask me what kind of camera I was using when they saw the Simrad screen. That says something.
Maps and Navigation: Garmin's Home Turf
When it comes to charts and navigation, Garmin has the edge. The preloaded BlueChart g3 coastal charts are detailed and accurate, and the interface for route planning is intuitive. Garmin's Quickdraw Contours let you create your own detailed depth maps of your favorite spots, which is a fantastic feature for serious anglers. The GPS is rock solid, and the integration with Garmin's other products—like the Force trolling motor—is seamless.
Simrad uses C-Map charts, which are good but not quite as polished as Garmin's. The navigation features are solid, but the menu structure can make route planning feel more cumbersome. Simrad also has Genesis Live, which is similar to Quickdraw, but it's not as user-friendly. If navigation is your primary concern—say you're running long distances or exploring new areas—Garmin is the safer bet. If you mainly fish familiar water and care more about sonar, Simrad is fine.
Ecosystem and Integration: A Tale of Two Philosophies
Both brands offer networking, but they take different approaches. Garmin's ecosystem is broad and cohesive. The GPSMAP can talk to your radar, autopilot, VHF, and even your smartwatch. The Garmin Force trolling motor integrates beautifully, allowing you to control it from the chartplotter. If you're building a full Garmin system, everything just works together.
Simrad is part of the Navico family, which includes Lowrance and B&G. The integration with other Navico products is excellent, and the NSS series can share sonar and maps across multiple units. But the ecosystem is a bit more fragmented, and some features require additional modules. If you're already in the Simrad/Lowrance world, it's great. If you're mixing brands, you might run into compatibility quirks. I've seen too many guys try to pair a Garmin radar with a Simrad display and end up with a headache.
Price and Value: Where the Rubber Meets the Road
Price is often the tiebreaker. Garmin tends to be slightly more expensive for comparable features, but the interface and navigation polish can justify it. Simrad offers excellent sonar for the money, especially in the mid-range. The NSS evo3S is comparable in price to the Garmin GPSMAP 943xsv, but you're paying for that 3D sonar. The GO series is a great value for budget-conscious anglers who still want good sonar. In my experience, you can get into a capable Simrad system for a bit less than a comparable Garmin.
That said, don't just look at the unit price. Factor in transducers, mounts, and any additional modules. A cheaper head unit can end up costing more if you need to add a high-end transducer separately. I always tell people to buy the bundle that includes the transducer they actually need. It saves money in the long run.
Decision Matrix: Which Brand Should You Choose?
| Your Situation | Best Brand | Why |
|---|---|---|
| You fish rough water and need physical controls | Garmin | Knob and buttons are easier in chop |
| You're a serious structure fisherman who wants the best imaging | Simrad | StructureScan 3D is unmatched |
| You prioritize navigation and route planning | Garmin | Superior charts and intuitive interface |
| You want a simpler, more forgiving interface | Garmin | Easier learning curve |
| You're on a budget but want excellent sonar | Simrad | Great value in mid-range units |
| You're building a full integrated system | Either | Both have strong ecosystems; stick with one brand |
Still torn? I've written detailed reviews of both brands' flagships: my Garmin GPSMAP 943xsv review and my Simrad NSS12 evo3S review. Read those, then come back here. Sometimes the specific unit makes the decision for you.
Who Should NOT Buy Either Brand
If you're a casual weekend boater who just wants to know the depth and water temperature, you don't need a $1,500 chartplotter from either brand. A basic fish finder or even a good phone app will do fine. Both Garmin and Simrad make entry-level units, but if you're not going to use the sonar or navigation features, you're overspending. I've seen too many guys with $2,000 screens they only use to check the time.
Also, if you fish a small lake where you know every stump by heart, a high-end unit is overkill. Spend your money on a better trolling motor or a good anchor. Electronics are tools, not trophies. Buy what you need, not what impresses the guy at the dock.
My Verdict
After two years of running both brands side by side, here's my honest take: Garmin is the better all-around choice for most boaters because of its interface and navigation, but Simrad is the better choice for serious sonar users who prioritize bottom detail above everything else. I currently run a Garmin on my charter boat because I need the knob and the reliable navigation. But if I were purely a bass fisherman chasing structure, I'd switch to Simrad in a heartbeat.
The truth is, you can't go wrong with either brand if you match it to your fishing style. The worst mistake is buying on brand loyalty alone. I almost did that, and I would have missed out on some serious sonar technology. Test both if you can, or at least read the reviews and be honest about what you value most. Your electronics should make your time on the water easier, not more frustrating.
Here's my advice: if you value ease of use and reliable navigation, go Garmin. If you're a sonar-first kind of angler and don't mind a touchscreen, go Simrad. You can't go wrong with either—just don't buy more than you need.
If that list is empty, try this unfiltered search. And for budget options, check DHgate—prices are lower, but shipping takes longer and quality varies.
Frequently Asked Questions
Which brand has better sonar, Garmin or Simrad?
Simrad has a slight edge in structure imaging, especially with StructureScan 3D. Garmin's sonar is very good but doesn't quite match the 3D detail. If sonar is your top priority, go Simrad. If you want a balance of features, Garmin is excellent.
Can I use Garmin transducer with a Simrad unit?
No, transducers are generally not cross-compatible between brands. Each brand uses its own connectors and frequencies. You need to use a transducer designed for your specific brand and model.
Which brand is easier to learn?
Garmin is generally easier to learn, with a more intuitive menu structure and the option of a knob for quick adjustments. Simrad has a steeper learning curve, especially for advanced sonar features.
Is Garmin or Simrad better for offshore fishing?
Both are capable, but Garmin's navigation and reliable GPS make it a slight favorite for offshore work where you depend on precise routes. Simrad is also very good, but the touchscreen can be trickier in rough seas.
Do Garmin and Simrad units network together?
No, they are separate ecosystems and do not network with each other. If you plan to build a system with multiple units, choose one brand and stick with it for seamless integration.
Written July 2026. Electronics models and features change, but the fundamental differences between brands remain. Always verify current specs and read recent reviews before you buy.