I just love my new Tamaron lense. The flexibility of range is great and the ease of use for the amature is great also.
It has been written that you see shadows and blur at corners in certain conditions with the lense set at different focal lengths. Again, for the amature, to me, this is not going to be an issue. I don't set my subjects up with special lighting, at least not yet. From what I have read, being mounted on a Canon EOS XTi is the best thing for this lense.