User Review: Magellan SporTrak Map
Price Paid: $299
I've had this gps probably for about 3-4 years now. I have not had one problem with it. It completely lives up to what it says it can do. It's completely waterproof, and it floats.
I've used this for hiking, geocaching,and fishing/crabbing. I first tested it in the sink filled it with water and tossed her in, and she floated. Then i went out to the bay and it floated. and even despite the salt water, the screws didn't rust. It held its water tightness through everything.
Overall it's an awesome gps. If you're looking for a used gps I would recommend one of these.