The Popular Photography review of the Sigma 70-200mm F2.8 APO EX DG HSM AF lense reflects very mediocre performance at 200mm -- about on par with the Sigma 18-200 3.5-6.3 that I use as my walk-around lense. I am looking for a fast zoom 200mm or 300mm for sports photography, and my budget demands I stay under $1000...this seems to be the only new lense that can be bought for that (Tamron has just announced a competitor). Is the lense really this mediocre at 200mm and close to it? Or was this an atypical test. I know that my Sigma 18-200mm is hardly a champ at the 200mm, and if the big lense is also this mediocre, perhaps I am better off considering an older Nikon 80-200? Any help and perspective from users would be appreciated.