The GoPro HD Hero2 is a big improvement over the original Hero and winner of our Editors' Choice award in 2011. But now there is the GoPro Hero5 which is our top rated camera.
We frequently used the Hero2 and the HD Hero attached on us at the same time for POV angles. The Hero2 performed noticeably better than its predecessor and the Contour+. The low-light conditions were challenging, to say the least, and the Hero2 consistently delivered richer colors and seemed to cut through the haze better than the Hero. In short, the footage looked a good bit nicer on the Hero2. Given the choice, I would not hesitate to spend the few bucks extra to get it instead of the original Hero. The first generation GoPro HD Hero still delivers a great camera with loads of mounts for $240. However, we really do feel it is worth spending the extra $60 to get the Hero2.
Overall, GoPro has delivered a very powerful little camera with this Hero2 and it is a solid choice for any POV use. However, the Contour+ remains more extra-feature-rich and will appeal to users who value its Bluetooth capability, GPS recording and configurability. Check out the complete Helmet Cam Review.