With the recent price drop of the Sigma to $1399, these 2 lenses are now the same price. The Sigma has a better warranty AND IS, so I'm really struggling picking between the two. I plan to primarily shoot sporting events on my 7D, so IS isn't required 100% of the time, although it would be nice to have for the occasional stage shot at kids programs and video. Does anyone have any experience with the new Sigma? Any comparisons? Also, I only plan to buy new and the Canon 70-200 2.8 IS vII for $1,000 more is out of the question - unless I win the lottery, which I don't play 
Thanks for your help!

) but I didn't compare head to head with the Canon 70-200 II OS as it was out of my price range plus my wife would obviously notice a different colored lens!
