I just started geocaching a few days ago - I got the magellan explorist 200 for my birthday. Basically, you type in the coordinates of the cache, and look at the compass feature to determine which direction and how far away it is. I wouldn't say it's exactly full-featured (black + white display, roads are not very detailed, doesn't hook up to the PC), but it is one of the most inexpensive models out there, and with geocaching it seems all you need to do is find the spot you're looking for, so these nicer features are just luxuries. The device got me within 15 feet of both of the caches I have found, so I'd recommend it.
