I got rid of my 70-200 f/2.8 and bought the new version II. Ordered it from Amazon Saturday and it arrived this morning. Haven't had a chance to do much with it since it was nearly dark by the time I got home, but so far it's impressive. I'll get a chance to shoot a high school basketball scrimmage tomorrow night. Looking forward to giving it a workout. I was always pleased with the version I, but couldn't resist getting the new version II after seeing all the reviews for this it.