I really like my Garmin GPS72. I got it some years ago because I like the bigger and better marked buttons and bigger screen. My old eyes and fat fingers need extra room on electronic stuff.
Just some hard-won experience and advice. Wherever you go, always take a good topo map of the area you're in and a compass, and know how to use them. GPS are very nice, but don't count on them completely. Anything that will disrupt the signal for satellite TV will also disrupt the signal for a GPS receiver.