I've tried the hero, the playsport and a number of others but now just use the drift ghost. It was one of the more expensive ones, but I probably could have got 4 for the money I spent on others camera's that didn't cut it. Things things lasted longer and put out more, but that's just my experience.
Not a GoPro but if your open , Nikon Coolix 120 is pretty impressive. Fully waterproof, Uses Remote app on your phone, GPS, Compass, WiFi, Stereo, 1080P, yada yada. Great picture and video quality in my experience. Kind of a Swiss Army knife of outdoor cameras.