I did change to a SONY NEX-7 (Werbung: Sony Alpha 7R bei Amazon kaufen)
last year, and now with the recent release of the Sony α7R I will become even more sonyzized.
What I really love is that I can continue to use loved NEX lenses and on top of that if needed all the great Canon L lenses I do have here. Coming from a Canon 5D MkII no other full frame, interchangeable-lens camera is this light or this portable. Not to forget the 36.4MP and OLED viewfinder.