From what i've seen so far I think the GoPro still has the better quality video, the drift does look like a good option too.
Check out this review
I've overdue for a Putty run, just need more time and better weather.
I have replaced the 2 lower ones with a captive nut and screws. I ordered a few of these too.
http://www.wiremybike.com/index.php?cPath=44
they sell the steering head powerlet plug kit.