are better in different ways than others. There are basic ones, that you can enter the coordinates and it will get you to the target. Next step up is one with a base map, that will let you see the main highways so you have a better reference to where you are. Then the next step up is better maps with all the streets on them, or Topo Maps for terrain, and the Marine ones with salt water and fresh water maps, with buoys, channel markers etc, or ones with all of the above. Many of these handhelds are very high tech. I have one that does it all, and I can mount it on my bike, or in the car or in the boat or canoe. It has it all and is color. The the one in the picture above, is a new Garmin and it has the maps, but also lets you ad one called Street maps and cities and many others maps you can load in it....They are very detailed and also has auto routing, along with Geocaching, altimeter, all kinds of stuff.
Let me know what you want to do with one and I can suggest at least a couple to pick from in either new or used. With GPS, like detectors, people seem to change what they own alot. You can get them with lots of bells and whistles or bare bones. All will fine a coordinate about the same, except the better the antenna, the better it will work ni tree covered areas.
I have 5 of them here. I like them all, but honestly, one is all you need. I just found good deals on EBAY so bought them to play with or take a friend with me geocaching... I use them for travel alot also. One with at least a base map might be better for you, or also a Marine one as it will show you better detail on the water or coast line. I can take a picture of the screen map of a selected area you want, if you want me to show you what it might look like. I have a color Marine one....Color is a little weak in bright sunlight on most of them.
George-Ct