I currently have all 3, started with Gaia but didn't like the ability to add custom waypoints then I found base map and prefer basemap. Base map has better map imagery overlays custom waypoints you can do line distances, custom shapes and circles among many other things the weather,wind, moon phase sunrise sunset. There's a few things with base map I don't like right now as the map can be a little glitchy with the overlay's. I like to use the Nationwide lake overlay, WMA overlay and private property overlays and I've noticed sometimes when zooming in and out that it can cause the overlay to glitch around the map and not be exactly where it needs to be sometimes I haven't figured out what causes it that's my biggest complaint about basemap however it is still my favorite because of the color scheme and the overall experience of using basemap. For me it's easier to read basemaps imagery and overlays than it is Gaia and onyx. To me Gaia is too old to feel like it's something that should be around in the 90s and it doesn't offer nearly as much as base map, however it's nice that Gaia is the only one of the three that you can make your map custom and change the transparency of each overlay to your taste and the preceptation overlay is nice too on Gaia.. Both are around the same price you for Nationwide coverage. I'm on the trial period to compare with Basemap to Onyx, is good as the the map is streamline and was very fluid it's easy to zoom in and out compared to Basemap which can be a little frusrating zooming in and out as it's not as fluid as Google maps. Google maps and onyx fluidity are very similar in the ability to zoom in and out, you can click my location and it'll take you to a location and then click it again and then you can orientate the map to which way you're pointing your phone, base map doesn't have that, yet....Other than that though I don't like the way Onx's waypoint interface, color scheme which makes it harder for me to identify POI(particularly the WMA overlay which to my eye is too transparent and too many colors covering ONE WMA outline which can make it confusing knowing exactly here the borderline is of the WMA if Onyx is your only map without any legend to explain the different colors) from a zoomed out perspective and for one is too expensive compared to the other two. I find using basemap it's easier for me to see and find bodies of water and land (WMA's) compared to Onyx so I'm sticking with Basemap for now and In the hopes that overtime they will improve upon map fluidity and phone to map orientate to better understand which direction you are facing. It seems like you have to just try each one and figure out from there I went with Gaia at first based off of all the reviews in the fact that it was cheaper and it didn't last very long before I started looking for a better one. My 2 cents, as with most things in hunting it's preference and user experience. Plus I like that basemap offers better ability to draw lines, customs shapes, and circles change colors etc to mark an area you want to scout, hunt or whatever and for the price is definitely more bang for your buck compared to Onyx