Unless you get the Hero 2, which can film in wide angle and normal (but with no zoom option inbetween), I wouldn't bother with a Go-Pro; too much of the technology; robustness, waterproofing, mounting options aren't needed for filming bouldering, unless you were planning on filming loads of POV shots.
Better (IMO) to get a sony handycam or one of several similar makes for around that price. More releavant features for your money.
Also change the subject to "video camera" most people assume you are talking about stills when you just say "camera".