I bought a 600 later on, but it proved to be quite adequate for the things I was trying to shoot (portraits without red-eye problems as the flash is out of line of sight of people's retinas; flash bounce; etc). And after testing an SB-800 in the store, I in fact prefer the lower-priced and only slightly lower-powered 600 because the fixed display LCD on the back is easier to read in the dark (which is, you know, where you're going to be using flash a lot) than the decidedly dim dot-matrix text on the 800.HybridArchitect said:
US$.02.