I got mine from B&H yesterday. It seems a bit soft wide open, but I love the colors it produces. Unfortunately, handling the weight is a bit more difficult than I expected. And it front focuses
I'll probably give the tokina 50-135 a try next
I tried 2, and they both front-focused. I even sent the second into Sigma for "calibration." It came back better, but still had an issue. Fortunately, it was still within the 30 day return period from where I bought it, so I returned for a refund. I really liked the lens, but I just couldn't get a good copy.
-Mike
Either way I am happy to be taking photos with my 70-200. Again I wish I could have laid out the money for the Canon 2.8L but I am happy so far. 






