Great post. I haven't shot with the D800 so I'm just going off the images I see on forums such as Flickr (and the images of a very talented wedding photographer I know who shoots with a D800). Grass looks greener since I'm often in situations in which more DR would be welcome, but I do love the 5D Mark III and would likely miss the responsiveness and autofocus of the 5D Mark III if I traded everything for a Nikon system (and I would definitely miss the 85L - lots of great stunning images taken with that lens). Ultimately all cameras have some tradeoffs. Picking a system is a matter of deciding which parameters are most important to each photographer.