One of the reasons users are fawning over the D800 is that every subsystem works in such harmony that we have not seen before. The metering is the best I've seen, the color is the best Nikon I have seen, the AF sticks after initial acquisition like Velcro, the DR is really evident and tolerate, the files are extremely flexible yet for my tastes, post processing is hardly done or needed.
Sure, the res grabs the headlines but the real world difference is how well everything works together in a balanced system, like nothing I have seen before. The D7000 is capable of very good images, absolutely but it helps to have some luck, as with the D800 it is a matter of routine. When I first got the camera, before even reading the manual, I went to Scotland and surprised myself on how few images I took, one per scene I was interested in. The only ones not kept were those which had composition problems, none were technically poor. Any conditions thrown at it, the D800 shined, dark unlit castle interiors, harsh backlit scenes, darting diving waterfowl, candid street shots at midnight handheld etc, all well exposed, very low noise, good color excellent WB with mixed sources. A recent wedding here was shot in natural light, with flash, at night, daylight, glaring sun, in a park, a dark forest and wedding venue and all those light mixtures, no post adjustment of WB, no exposure problems. I used a D7000 on the shoot also, some turned out really good as expected but no where near as consistent as the 1-frame gets from the D800. That is why I love the D800, others have their reasons but they DO have reasons. Stan St Petersburg Russia