>GoPro factor is the only one you can chest mount safely, and the only one you can helmet mount in the middle of a helmet.

I agree on the chest mount, but the helmet? Why wouldn't I be able to put my AS15 on my helmet with the provided stickymount? I prefer long and thin on my helmet...

I actually prefer the AS15's colours compared to the GoPro White (which is closest in pricing), and the Sony cost me €100,- less. (€150 / €250)