It's getting pretty tempting to leave Canon. I never thought I'd say that!
Um, well... I can't say I would agree with you on that. I have once said I will never, NEVER, switch to Nikon, ever, period! And I feel the same way today as I did then.
Anyway that being said, as beautiful of a camera the 5D2 is, it is
due for an upgrade. I can only assume that Canon will blow the D600 away by making the best full frame "compact" DSLR anyone has ever seen! I just hope the rumors of a "cheaper" plastic body is false, like the one found on the 60D. Yuck! If it has a metal body like the 5D2 or 7D, I would have to consider buying one.