I personally don't like gopro's because they charge crazy amounts of money for additional equipment, the whole company is a scam and they are totally overpriced for a small camera. I think contour has much better quality and ease to use. I also think contours have a better battery.
the only thing i miss about my go pro was the chest strap. other than that, the contour looks better, you know when it's recording, and i'm a huge fan of the rotating lens to level the image.
The preceding statements are the opinions of Pipe Munky himself and in no way reflect the opinions or beliefs of his employers or Newschoolers.com thus releasing them from any liability.
As a skiing-specific cam I prefer the contour because it doesn't have to be stuck on the top of your head and has gps, which I really like for embedding into videos. However, the gopro is more versitile as far as what sports you can use it with, as I've found it much easier to use for wakeboarding because its easier to chest mount