Lot's of good info in the posts where kilowatt recomends.
My garmin 76S is great I don't leave home with out it. It displays all my topo maps and much more. It's a good tool for outdoor use. I do my pre scouting sitting at my computer and then dump it into the gps and it's with me in the hills. I have owned a few gps's and the garmin seems to be more user friendly. When it comes down to what a guy really needs in a GPS the cheapest one on the market will tell you where your at.
~Jeff~