I bought the GoPro HD Hero2 this year so ill share my findings.
First off the thing looks like a bos attached to your helmet...or pole. But then i dont think its an issue, it does what it does its not a fashion accessory.
Video quality is GREAT, much better than any other ive owned. Obviously sound is abysmal in the case but thats expected.
The 720p at 60fps is great for all day general filming. Thats what got best results imo.
However this new Sony one thats come out that the guy has linked to above has 720p at 120fps would be even better. So probably wait for reviews on that to start coming in and keep an eye on it.