I will say this I have a Contour+2 and it's honestly the best form factor POV camera out there. They were actually ahead of GoPro a few years back, but do to change of ownership, they fell a little behind. But now are running full speed again.
It's the easiest to mount, period. You don't need brackets to level the camera because your rotate the lens after you mount the camera this levels the camera view. It uses either contour specific mounts or a standard camera tripod thread... so you have the best of both worlds. It has a lazer to help level it along with degree marks on the outside ring. You can bluetooth to preview all your settings on the camera and check what the camera sees. Or just use the onboard laser that will shoot a red line so you know where and how the lens is pointed.
It has an external mic jack. It has gps on it, very simple to use icons that light up on the back so you can see the status of your battery, how much room on your card you have left and status of gps with just the push of one button. It has a simple slide switch to turn it on or off with a lock to hold it in either position. Not having to push a button a million times to go through settings to get it going.
Replaceable battery, sd cards and bluetooth card. I have multiple batteries and a 32gb card, I can record forever..haha.
Then if you want to get deep into settings you can, either via usb connection to your computer or again through the bluetooth connection. There are just about as many adjustments on the contour as there are on my t3i. haha.
You can also pre define the rocker switch behind the back door of the camera for multiple settings, such as one position it's 1080p at 30fps and the other position it's 720p at 60fps. Or have it video record one position and the other position it takes photos. It's supper adjustable if you want it to be, or its very simple if you want it to be.
The two downsides to this camera, the image quality is not quite where Gopro is, all though the new Contour Roam 3 is very very very close. The other is there is no raw format to record in at this point, if that matters to you or not.
The image quality is still very very good. Form factor is the BEST out there period. Oh and to top it all off, I have yet to see any better customer service from anyone. They also supply leashes with their mounts so that in case you hit something very very hard with it, or the camera decides to eject, it wont get lost because it will still be attached with the leash.
I can go on and on and on about the camera. Feel free to ask me any questions. I can clarify if need be.