i use a contourHD.. mounted to my helmet.. i have tried other areas like handlebars.. near the rear tire.. all with lots of vibration.. mounted on the helmet really makes a difference when riding.. now once off the bike and walking is another story.. ask Composimo lol.. but speaking of Composimo.. he had GoPro mounts all over his MSX125 he made so he could switch up the views in a second.. pretty cool.. i want to get a new GoPro soon.. one that i can control from my phone.. probably go again with helmet mount..