Quick verdict
Two used Garmin units cover very different parts of the boating market. The GPSMAP 2010 is a color navigation and fishfinder MFD that lists at USD 169.99; the Fishfinder Depth Finder 80 is a dedicated depth-reading tool listed at USD 65.00. That is a price spread of $104.99 between them. Your call comes down to whether you want one screen for navigation and underwater detail or a simpler unit focused only on what is below the boat.
At a glance
| Product | Listed price | Price bar | Key strength | Main limitation |
|---|---|---|---|---|
| GARMIN GPSMAP 2010 COLOR MARINE GPS CHART PLOTTER FISHFINDER MFD With Suncover | USD 169.99 | Color chartplotter plus fishfinder in one MFD; includes suncover | No power cord included | |
| GARMIN Fishfinder Depth Finder 80 Marine Boat Sonar | USD 65.00 | Sonar depth finder with dual measurement systems | Dedicated depth finder, not a GPS chartplotter |
Where each wins
The GPSMAP 2010 takes the lead when you want a single display for route planning and a clear view of what is underwater. You can lay out a course and check bottom activity without changing screens. The Fishfinder 80, in turn, wins on focus: it is focused on depth first, letting anglers read depth and structure quickly without the extra menu layers of a full navigation unit. If you already have a separate GPS, this unit does not duplicate that job. You could even run both together, using the GPSMAP for route guidance and the 80 for quick depth checks.
Product notes
GARMIN GPSMAP 2010 COLOR MARINE GPS CHART PLOTTER FISHFINDER MFD With Suncover
Choose this unit when one display needs to handle navigation and underwater detail. The chartplotter makes it easy to follow routes while keeping depth returns in view. As a used MFD, it has been cleaned and is reported to work great, and the included suncover is a practical extra for open cockpits. Be aware that no power cord is included, so budget for one if you don't already have a compatible cable. The more capable of the two units, it also costs more and needs that cord. If you already own a Garmin power cable, this becomes a much easier buy.
GARMIN Fishfinder Depth Finder 80 Marine Boat Sonar
Pick this one if you already have navigation covered and simply want reliable depth and fish-finding data. The sonar sensor focuses on what's below the boat, and the dual measurement system lets you read depths in decimal or imperial units depending on your preference. Its plastic construction is suited to the damp, tough conditions of marine use. The trade-off: this unit prioritizes depth readings rather than GPS map navigation, so you won't get route mapping from it. For dedicated anglers who want no-fuss sonar, this is a straightforward buy. It keeps the user interface aimed at fishing rather than route planning.
Final choice by use case
Pick the GARMIN GPSMAP 2010 if you are equipping a boat that needs both GPS route planning and fishfinding in one display, and you can add a power cord. Pick the GARMIN Fishfinder 80 if you already have navigation sorted and want a dedicated depth finder that will not crowd the helm.
