For those who mentioned not being thrilled with limitations of a helmet-mounted camera, I'm with you. It was not flexible enough for me. In fact, I wrote about it on a blog post at one point, which has now become a semi-permanent info/guide web page, where I also talk about other ways to mount cameras. Feel free to check it out at http://www.leadermotorcycle.com/camera.html

 

Gopro Hero 3 and iphone5 make a great pair. Free App for iphone. Can operate camera remotely from phone and view videos and live view.