I've got the old school eXplorist.

http://www.amazon.com/Magellan-eXplorist-210-Waterproof-Hiking/dp/B000BGVYYE/ref=sr_1_33?ie=UTF8&qid=1356649665&sr=8-33&keywords=geocaching+gps

This version is a little tough to figure out, but it's easy to get the hang of after a bit, and it's super durable. Think Nokia phone kind of durable. I'm sure you're probably ogling a newer version, which I know nothing about, but I'm pretty pleased with the older version I have.