Hmmm I think I made my decision and am going to go with the Tamron!
joelovotti ... Nice pic!
Jewelltrail ... I guess I would expect a little vignetting at 17mm with any lens with a hood on.
Zebooka ... You are SO right about the 80/20% thing!
ixian ... I guess I pretty well made up my mind and am going with the Tamron.
Seeing the image quality and satisfaction of the Tamron and Sigma owners, I figure both lenses are practically equivalent. I am quite impressed with their quality, and am not willing to take the chance to get a nasty lemon with a DA*.
I'm ordering a Tamron this afternoon, and I'll let ya all know what I think of it when it arrives!
Thanks for everyones input!
Pat