I come to the conclusion that it is not worth it. A7 - the iphone 5 and iphone 4s are already blazingly fast. I can't see how much faster it can be. Fingerprint reader - I have bigger problems when someone has physical access to my device to even worry about him looking at my pictures or browsing history. About $800 worth of problems. And I am pretty someone will hack the fingerprint reader within 24 hours anyway. So that only leaves the camera, battery life and m7. These are just minor upgrades that its just not worth the hassle and what ever money you are going to lose.