So I've been looking at getting a helmet cam. I read through most of this thread and decided that even for such a small cost, I'd rather something higher quality and HD. Also, the GoPro isn't discreet enough for a helmet cam and the pov.hd is too bulky on the recorder end of things (not to mention really pricey). Really, what I'm asking is if anyone actually has experience using these cameras. I like the size of the contour and the fact that it appears very simple with just a slide switch to operate. However, it is approaching twice the price of the hd170. Of specific interest to me is microphone setup, so if you've used one of these as a helmet cam *and* managed to get decent voice recordings, I'd love to hear what you used and how it was rigged.