I gave the idea of pre-ordering a D800 some thought because I can afford it now. Since I am not yet using all of the capabilities of the camera bodies I have already (D700 and D7000) and my nice lenses, I decided to spend the extra funds on accessories that will help me expand my skills.
So, for about the same upgrade cost between selling the D700 and buying a D800, I ordered an SB-910 and some of the latest Pocket Wizards that will work with iTTL. Up to this point I have been getting great results from available light and occasional use of my camera-mounted SB-600. Now I want to try off-camera flash because I think that will give better improvements and more shooting possibilities than just getting the latest camera body.