Ken Rockwell likes the 6D............

well I like this from KR:

"D600 or 6D?

Easy: 6D.

I keep using the weasel word "Nikon" in describing the D600 as "Nikon's" best DSLR, while the Canon 6D and 5D Mark III are simply the world's best DSLRs.

I own a D600 for nostalgic purposes; I can use all my old NIKKOR lenses on it.

If you're married to Nikon (I'm not), the D600 is the way to go, but if you want the best DSLR, the 6D and 5D Mark III are in a much better class. They have better LCDs and don't demand two hands just to play back. Nikons now drive me nuts, while with my Canons I just shoot.

The 6D handles, feels and shoots. The D600 requires twice as many hands just to play and review images, and its power switch keeps turning itrself off.

My 6D images look better too, due to better colors. The green shift problem with the D600 is not something I take lightly."