I would not say the contour mounts are over priced*. Compare them to GoPro mounts and the prices are similar
Most of the action cameras around use their own propriety mount system, however the roam 2 has both it's countour rails plus a built in standard camera screw mount.
GoPro make a point of highlighting their range of mounts, whereas with the screw mount contour users can select from virtually every mount option in the world
It is standard for action cameras to have very wide angle lenses, it's by design as they are designed to capture the action and this means you don't have to be directly pointing at the subject. This does mean objects far away are not so obvious. If you want distance filming then putting together a scope-cam would be the way to go
GoPros are bulky, but if mounted in an appropriate place this makes little difference, contours and bullet cams are best suited to head mounts and barrel mounts
Note the optimum location is your head, followed by forward facing gun mount, then rear facing. But the more angles you get the more edit time and footage to work through
Of premium brands I'd recommend contour, sony then GoPro
There are very good alternatives and if you check out TechMoan on youtube then there is bound to be a review on how any you find measure up
* bearing in mind I have been contour sponsored so the cost of mounts has not been an issue to me. For any of the cameras around I would recommend opting for a mount set as these can often give you various mounts for about the price of two