I'm switching back to Nikon....... J/K!!! Canon has finally decided to issue me a replacement camera! The loaner I have been shooting with proved to produce far sharper images than mine and tracks way better. I have a few long threads on another forum where I found some hard core Canon A-holes that thought my camera was fine and blamed it on everything from swamp gas to wrong cases and wrong AF selection. Using Reikan Focal the loaner was about 7% sharper wide open on a 10 shot AF consistency test and this was after Canon had my body 3 times (twice with the 500 F4) and had supposedly matched them perfectly together. Hopefully at the beginning of next week I will have a perfectly working 7dm2 that is as good as the loaner..