I think that in the film era you could only think about lenses, I rember I had the 35-70 f2.8 and my 80-200 f2.8 ED with my FM3 , great little camera but nowadays I think one must invest in both.
That is , in my experience ( I shoot fashion , mostly Catalogues ) 10 megapixels is a resolution my clients complain about, and 12 megapixels bearly meets the needs for a vertical magazine print (forget cropping), a bit of interpolation is needed for horizontal tow page spreads, so I stood with Nikon for a long time until now that I have my D3x and my clients love it, print its images in anyway or form possible, horizontal 2 page spreads, vertical, croppings etc etc
So if you shoot for magazine or catalogue prints, definetly a good body is in order. (at least 12 megapixels) and good color rendition and noise control.
By the way, how or where can I add a picture to my profile, still havent found where, if anyone could give me a tip on this.. thx!