Thanks to everyone for the input. I hear what you're saying about bigger is better, but I don't think i would add anything more than the still camera (which I was thinking I would mount on the front of the helmet), and possibly a flash for the still camera.It looks like I could fit the flash on top of the Vapor Narrow next to that new Sony cx100, no? My reason for the front mount is wanting to stay as far from the risers as possible. Is the weight balance that much worse with the still camera mounted to the front of the helmet? It would be either the canon xt or the 40D. I relly like my 40D but it is a good bit heavier than the XT.