Glad you found it useful
At the begining of the video I mentioned that I used different SD cards. That MIGHT be the reason, since I haven't noticed much difference when I used same micro sdhc card.
Sony wins, but in my opinion sjcam gadgets look slightly sharper in bright light.
The best advice I can give you is to watch my reviews of m10 and sj4000 to compare videos. I might soon create face to face comparison of the two.
I have a lite version of M10 , so I do not know about waterproof case issue. Never had issue with case on sj4000 thought the buttons were a bit hard to press, everything worked.