You've all probably heard of the Mobius or the Runcam for those who may need a smaller/lighter camera. Firefly's been making some very nice, and well regarded, cost effective cameras. Their latest entry has many nice features it's competitors lack. http://www.gearbest.com/action-cameras/pp_360144.html Looks like a winner.
Do any of these have fancy in-camera stabilization? I know the quality of all of them - from the 808 up - is great. But it's always the jello and vibrations when flying them that makes my vids a pain to watch. Of course, some of it my poor (manual) flying. I tend to constantly turn and reverse just to keep things from crashing. I used a Mobius once on my sailboat and was stunned by how great the video was!
In the larger GoPro format the GitUp Git 2 2K and the Hawkeye Firefly 6S 4K both have rather efective image stabilization, at least in the walk about tests. Techmoan really likes the Git 2. Great camera reviewer BTW.