I've been using the D300S for a while now, and love it. Still, the attraction of full frame had me looking long and hard at the D600, especially with the fantastic offer going on right now. The problem for me with this camera is I really don't like the feel of the D600 and the set up of the controls. I thought I would get used to the camera, but I've played with 1 a few times now, and I just don't like it. I may buy a used D700 or wait until something else shows up from Nikon. As to the D800, it's beyond my reach financially, and I don't need/want 36 mp.