I've had it for ages now, but just recently I picked up a very used 1DMk2, and noticed how fast and how different the images were, even though the megapixel size (8Mp) is the same.
Birds in flight were also always tuff with my 20D, and the 1D seems much better.
I mostly just shoot landscapes and wildlife. I'm also a bit concerned with file sizes as the ones I have now are very manageable, and I also use HDR which triples or more my file sizes to work with.
What would be my options to upgrade, that would help my image quality and focus speed for BIF and wildlife?.
I was looking at the 5D classic,T3i and T2i, but since I shoot landscapes theres many more options for the crop lenses than full frame, especially since that 15-85 with IS seems ideal.
I would also like the option of shooting more than 3 brackets, which I realize is pretty much the standard, but theres also the Magic lantern software which opens up a lot more possibilities, but only with certain cameras.
Please give your opinions and why please.

