Quick couple questions for you users of the 1D Mark II... I came across an ad on here of a user willing to trade a 10/10 condition 1D Mark II for a 60D. I recently purchased a 60D and while I love the camera, I'm curious on a couple things about the 1D versus the 60D. The increased image sensor size making it a 1.3 crop will ultimately give me a few more mm's of usable coverage with lenses versus 1.6 crop correct? Also, adding an L series lens creates some sort of weather sealing with the system, from what I understand. And lastly, can anyone confirm the high ISO performance of the 1D, and who has also used the 6oD hopefully. I know I'm asking alot here but I want to make as informed of a decision as possible. 