After my 40D shutter failed during a recent HS soccer game decided to go for a 7D instead of repairing. All I can say is wow! Using my 300 f/2.8 and expanded AF point focus was incredibly accurate. No more sharp fences and blurry faces. Customizing the speed and priorities of the AF helped here. Bonus came during last nights game as sun went down and weak stadium lights lit field- useable shots at ISO 3200, and 6400 were still better than not getting them at all after a little Lightroom work. Gamechanger for me (ISO 800 was best i could accept with 40D), and looking forward to night games now!