I am debating whether to buy the soon to be released Canon 70-300 mm f/4-5.6 IS II USM, or the Canon 70-200 mm f/4L USM. They are nearly the same price and I am torn. I am in need of a new telephoto lens. Currently there is little information on the 70-300, but the specifications seem promising. I shoot on a Canon 80D, if the crop factor makes any difference in what I should go for. Your recommendation and reason why, is all I ask. Thank you!