I cant go into a in depth review but I have the 28-75 and the 17-50 tamron and I like them both. My copy of the 17 is a touch sharper then my copy of the 28 but the 28 is years old where my 17 is relatively new.
Both take beautiful pictures for me (guess I have good copies of both). Def make sure you test it out to make sure you get a good copy of it (nice lens if you do).
Yes, it does have the buzzing motor but if you don't need instant instant auto focus it will not be much of a concern. I have no problems using it and getting good shots and im no pro.
It will hunt a little bit in very low light, but I think most lenses do.
All in all its a nice lens for me and the focusing of mine does not bother me.
