Fly6 is good on the back. Up front, no perfect cameras currently as far as I know, but I haven't been looking for a while. The Contour Roam was good when they were available. Now it seems like none of the waterproof camera choices consider anything longer than an average downhill ski run to be worth putting batteries in for.

I'm kind of thinking about setting up a Mobius in a DIY waterproof case and USB power source.