I have a similar set of those googles but are 1080p without the zoom. For under $100 it's the best bang for the buck. It's not as sharp as the gopro but the audio is the best out there without having that muffled sound from being closed in a case and very little wind noise.
It struggles a little at high speed when you look into the forest with all the trees but the rest is perfect. Best part that I always liked about them is there is no guessing game is it recording or not with display always in front of your forehead. Also another great thing was battery life was awesome. Charge it in the morning and you are good for the hole day.
FYI I have 2 gopro blacks, liquid image googles 1080p, Sony action cam (returned) and contour 720p. As I said above Liquid image is the best bang for the buck.