7D owners and frustrated 5D mark II owners will love this. I never wanted to update my 7D cause even though I wanted a full frame, the focusing system was worse and the speed was slow. Now I have an all improved option...the only problem is the price. That's alot of $ to upgrade and the battery grip is WAY too much.
For 5D mark II owners, canon has addressed every complaint...though not every dream. There are still some things I dreamed about like 1080P @60fps, cheaper pricing, better metering...little things but they were only dreams. The Mark III fixes and more than satisfies any problem you ever thought you had with the Mark II with some extras.