Might as well chuck in a mini review/thoughts... Having used a GoPro couple weeks ago, and a ContourGPS
Both were ok, but not great and had their own issues.
GoPro - Cannot see where it's pointing. This is being fixed in the next model apparently which will bluetooth to a phone or device so you can see.
ContourGPS - Cannot see where it's pointing, although it does have 2 laser dots to at least help align. It does have a bluetooth application for Android, however I could not get it to sync with my 6 month old Android phone no matter how many times i tried so there are clearly inherrant flaws in the sync/software.
Battery life was also terrible.
- Both were easy to operate/turn on. GoPro a little more difficult initially, it's a simple case of pressing a button too long and turns it to camera mode rather than video. Once you understand this however it has very simple 2-button operation.
Contour is a slid-button operation once on. (took me 3-4mins to work out, didn't have user manual)
- Mounting took all of about 5 seconds either way. Suction makes simple.
- GoPro sound was non-existent it was that bad. It was mounted externally.
- ContourGPS sound was average at best. It was mounted internally