The D700 - Ahhhhh! Get one while you can. I bought one about 3 years ago with less than 1000 actuations. It now has something over 5000. That is because I don't fire of dozens of frames at a time in the hope one is worth it. Plus what build quality! I also have a D600 and to be honest, I am not sure twice the pixel number is really worth it. I can easily print an A3 sheet even with a section of the image from the D700 The D600 is perhaps only better than the D700 because it has a 'improved' processor (whatever that means).