The GoPro has two different lens angles, 127* in 1080p and 170* in 720p and 960p. When I was looking at the Contours and seeing markings on the lens ring, I thought they also had different angle setting. After looking again today, I see I was wrong. They have 170* though the GPS model has a 135*. I really haven't got around to checking batt life on the GoPro but their website says 2 1/2 hrs. Figure an hour in the cold then. Like I said tho, the video and sound were very good, but we were just hittin some park trails on mountain bikes. My main concern was that it just seems so delicate when out of its housing. You can ck out youtube to compare pics and sound. I just seen on TV today that Best Buy now carries the GoPro HD in several different mounting configurations so you can check em out there and see what you think. Plus, the price is the same as most online retailers.