From what i've seen, there are wayyy more edits made with a GoPro versus contour, which goes a long way in showing what people prefer. if you have seen what abek has done with the USC ski team, it just conveys how versatile the GoPro is. The contour is a convenient helmet mount design, but if you want to use it for other shots it doesn't have the flexibility. With the GoPro you can get mounts for all sorts of things, and for skiing the chest harness is pretty cool. My friend is taking a film class in college, he doesn't even ski, and the professors pointed out the GoPro as a legitamate supplement to the $2000+ dollar Canons they are using. He is actually making a short film involving a swat team, secret agents and the whole shebang. Lol he got pretty realistic M16s, pistols with lasers/silencers (+fog machine to make the lasers stand out). The GoPro is going to provide a first person shooter kind of look for some of the shots.
Honestly it would be dope to have either, but the GoPro has the edge in versatility.