A new action cam is on the market… The Oclu separates itself by shooting 4K at 30fps and 1080p at 120fps for super slow motion. It also has live cut editing on the camera so you can dump the stuff you don’t want as you go.
Of course, the most important feature is stabilization. The company and a few reviews I’ve read say it’s as good as GoPro. This one might be worth a test.