maybe the guy below me got a decent copy, but i got an exceptional copy. @ f2.8 is crazy sharp esp. with the macro.
As far as the weight, its not terribly heavy, but slightly heavier than my 70-200. The lens hood is big enuff to walk into most events and not get questioned, so thats a plus.
Overall a great lens, IS would've been nice but ppl are constantly bitching about the weight, i think canon thought twice