My 18-55 has a crack on the housing, while it still works, the focus seems to be a little off. I have been looking for a replacement, and I need one soon. I have looked at the Tamron 35-105 2.8 or the Nikon 18-70. The tamron is faster, and a little cheaper, but I loose out on the wide end. Right now, I am getting more wedding gigs, and losing on the wide end maybe a bad thing. Anyone have any more recommendations? I would like to stay under say $275 to replace this lens - new or used. My local camera store has the Tamron for $199 and the Nikon 18-70 for $250 (both used, grade 9 in quality) Camera is a D50, but not too far down the road is an upgrade to D80 or D200.