I have just bought my 10D and went for the 70-200/2.8 with the 550 EX. I am aiming for the top - after moving from a Nikon based film system. I have read that the buzz on the 24-70 is that it is slightly less sharp than the now "discontinued" 28-70/2.8. for the difference in price i wish thet i could get my hands on the 28-70!Does anyone know of a site that has tested the 24-70/2.8 the way that photodo.com did with almost all important lenses of a while back !! How little is the difference between these two lenses please --- i want to buy my second kick-ass canon lens.

