I do not have a D800 series as of this date. I have a D3 and a D3s. I sold my D700 to help finance my D800 purchase. While attempting to research and decide between the 800 or the 800E, a decision, by the way, that is still unclear, all of the focusing issues Began cropping up. When I need my camera to make an onboard focusing decision I want to be able to trust the technology. When that moment arrives I will own one. The price point is reasonable enough that unlike the D3x, I can afford. Either body would be more than sufficient to stand alone. Neither body would be the best tool for all applications. Meanwhile, I can enjoy the research and anticipation of a complete resolution, (pardon the poor pun) of the focusing issues.