I have one too, and like it. But it pisses me off sometimes. When I'm starting a ride I hate sitting there in one place and waiting for it to acquire the satellites. Sometimes it takes five minutes, and I'm itching to get riding... but if you start riding it takes even longer to sync up.

Sometimes it goes nuts and shows I did 2500 feet of climbing when I did a basically flat ride.

The software it comes with is pretty lame.

It's a neat tool, but it has some warts.