Everyone seems to be whining about Canons current cameras. Funnily enough I decided to invest in a whole heap of new camera gear and ended up with two 1DX bodies, six new lenses, and two of the new speedlites. I was happy enough to switch to Nikon if I thought it was a better option. If Nikon put the D800 sensor in a full size pro body priced similarly to the 1DX, then I may have considered it, not for any other reason than the better dynamic range and shadow detail recovery. Yes, the extra resolution would have been nice, but for the most part it isn't necessary for me. Even still, I would have really had to think about it, as I plan on buying the 17 and 24 TSE's soon, and perhaps if they become more than a rumor, the updated 45 and 90 TSE's as well.
I must say I am extremely impressed so far with the 1DX. Handling is brilliant, and image quality is superb. Now I have them I kind of hope Canon doesn't release a much improved sensor anytime soon, because I will want one even though these cameras are just about perfect for my needs.