hi there,my first post here.anybody use one if so what do you think of it.
been thinking of getting one.any comments appreciated.

I don't own it, but I checked it out at the camera store and it was pretty nice. I do own the Tamron 28-75mm f/2.8 XR Di and it's excellent. So I have a lot of faith in Tamron's lens quality. There are 20 user reviews for the Tamron 19-35mm lens here and it has an excellent rating:

Read and write Tamron 19-35m 3.5-4.5 AF lens reviews >> (http://www.photographyreview.com/sf-1/befid-96323/pid-21209213/productreviewscrx.aspx)

I also found a discussion about the Tamron 19-35mm lens on the Canon forum:

http://forums.photographyreview.com/showthread.php?t=26147

Hope that helps. Welcome to the site!