Yes, the GPS Information web page is an excellent resource! Beat me to it... <img src="/images/graemlins/smile.gif" alt="" />

As far as GPS goes, stay away from any units that use proprietary rechargeable batteries. Most seem to use "AA" batteries, although there are a couple Garmin's that use smaller "AAA" batteries.

I'm kinda partial to the Garmin line, but that's probably because that's all I've ever used. I have an "eTrex Legend" which fits the bill for something basic for hiking / driving. There is the option to download additional maps (Garmin calls them "Mapsource"), but those CDs seem to run about $100.

There are also 3rd-party programs that can interface with your GPS (upload/download waypoints, routes, live tracking, etc.). DeLorme makes quite a few programs and National Geographic has a great Topo map program.

If you can, I would visit a store where you can try before you buy. Each one is a little different.