I'm a fan of Garmin too. We're still using a eTrex Legend with a black and white display. I taught a GPS class with the Vista color units for a couple of years too. I loved the extra memory they had to download detailed map data.
There are a bunch of great devices on the market now. I think the best thing to do is make a list of the features you really need or want then start shopping for the unit that fits the bill. For the most part all we do with a GPS is go geocaching so mapping is the only thing that I find as a necessity. Additional memory to download extra maps is a plus but not always necessary.
We also use mapping software (I think it's from Garmin too) to create our own maps for Orienteering. I've also used the software in conjunction with the GPS to do our own quick surveys on hunting plots. It's not perfect but gets us close enough to keep everyone from getting into trouble. Basically you use the GPS to set way points then transfer them to the maps and label everything from property lines to favorite hunting spots and dangerous areas to avoid etc. The finished maps are printed and handed out so everyone has something to carry with them. For other GPS users we upload the map to their device and they are good to go too.
Jon.
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