Like Anthony said the best Nikon is the DX3, but along the same line you most likely won't put a $200 lens on it either. Not to say that the $200 lens will not do a good job but a $6000 lens will be better. Knowledge and technique and the 12 inches behind the view finder are more important than the camera and lens. Who needs a $7000 body and a $6000 lens? I am very satisfied with my D200 and 18-55 lens. Most of the time I would rather have my 18-55 on the camera than my 24-70 f2.8.
Really enjoy these discussions!!