So far I have seen footage from the GoPro3, Oregon Scientific ATC 2K, and a CCD+Archos-type recorder.
The problem with the CCD+Archos-type solution is that most of these type or recorders are not waterproof, someone brought one to the Tiger Worlds and drowed it on the second day even when it was in a waterproof phone case.

IMHO for Youtube videos the GoPro3 is the best in terms of video quality.