I am using go-pro, the main reason you can check the settings without the computer. I looked at a lot of footage before i bought it. there are several advantages to this vs. contour:
can change settings without computer is one. second it has the widest FOV in 720/60p. btw that setting produces very smooth image, even for fast action. Side by side it reproduces colors much better then contour. yes, you can change that later in post, but why? it matches really well with my HM100. Since it's H.264 it the pain to edit in FCP, so the footage has to be transcoded to something i can edit with (like ProRes). It's waterproof, so no big deal for ice and snow in winter, also good for surf or kayak vids. also jello skew is much less noticeable with go-pro vs contour. also there are more mounting options, even tripod.