I opted for the drift ghost and think its fantastic, robust, already water proof, has the best battery life and comes with an intelligent remote. The footage is superb and it will take any standard camera mount.
It can record back in time too!!! excellent feature, has a car mode with the latest software update. The only niggle I have is the phone software app (android operating system). has bugs, but they are working on that.
I'll try and upload a short vid clip from when i was out on my ski last time home.
I might of been swayed towards the Garmin as I have the navigation Fenix watch that can be used as a remote control for the camera, but didn't realise until after I'd bought the watch.