Videos attached to the helmet suck, as you cannot gauge lean angle since your head is normally parallel to the pavement.
I've mounted mine by making a C shaped clamp out of aluminum bar and put it under the sterring stem nut and looking through the windscreen. I used cheap aluminum and it vibrated a tad and you have to bend the clamp to ensure you have the right angle.
I've also attached it to a passenger peg bracket (remove peg on left side of bike)...this is great if you want to video your friends behind you!
I then bought the tank mount (a cheap ebay one) it works great but doesnt like wheelies (moves the camera angle if you dont set the bike down gently) The video was great except I forgot that using my camera directly means I needed to adjust the zoom...so the video looked like crap (my fault).
I like my helmetcamera.com once since it will hopefully keep the camera protected in teh event of an off, but I'm unsure it it will fit into the trunk on the 10, especially with the power commander already there. So if you are going to keep it in a fanny pack, then just get the cap mount tank mount one.
I will play with video making more next year and let you all know where I decide to mount the camera. I did talk to one guy who used his front fender to mount the camera. He used the top bolt hole and placed some sort of clamp with a nut there and routed the cables up the forks...it was awesome, but i would be worried if that vibrated loose and something for in between my wheel what would happen to me.