I'd love to hear theories explaining the absence of a fast telephoto zoom for the DX format from Nikon. Sigma and Tokina offered the 50-150mm f/2.8 and 50-135mm f/2.8, which they subsequently discontinued; Sigma teased on the OS version of theirs, then erased it from their website (delayed or aborted?) VR would be excellent, though making the lens bigger and more expensive. I have a 55-200mm VR, which is ok but slow aperture and slow to focus (it is inexpensive after all.) I'd be thrilled to carry my 12-25, 35mm, and 50-150mm-ish in a pretty small kit. The fact that the third party lenses were discontinued suggests there wasn't much demand, though I read good things about them. Most people are familiar w/ the pros and cons of the 70-200mm VR on the dx format...would a DX equivalent simply be not much cheaper and not much smaller? I won't beat a dead horse any more. What do you think?