I have a GoPro, Contour and Drift and I prefer the Drift because it has a LCD, Remote, Zoom, and external Mic.
http://driftinnovation.com/hd170-action-camera


I got all three of my cameras from these guys:
https://www.mypov360.com/shop/drift-hd170-helmet-camera/

and the must have accessory is the Pedco Ultra clamp for attaching any camera to your bike.

Sample Video:

any one ever experience fog inside of your GoPro?  I was editing some Moto-X footage for a friend and half of his footage was bogus due to fogging up.

I found this as a solution: GoPro Anti-Fog Inserts
http://www.bhphotovideo.com/c/product/689733-REG/GoPro_AHDAF_001_Anti_Fog_Inserts.html