>... proven support > Make that notorious support. But back to the topic. I sold my D7000 a couple of months ago and now am without the DX format. Due to my lack of lenses beyond 300mm, a motorsports photography addiction and the new focusing prowess, I ordered mine the morning after the announcement. I love my D4, but it's weight is unfortunately causing me problems. I am thinking I will sell it in favor of either the D800 or (probably) the D600. But I have to wait till I complete a wedding shoot in March. I will rent a D600 as a backup to give it a go. My D7000 just didn't have the quick focusing to keep up with speeding motorcycles in close quarters. I had to set a focus trap to get better results.