Alex:
How do you like your 300mm for wildlife/birds. It's important to me as I am considering purchasing either the 300mm F4L IS fixed or 100-400 4.5-5.6L IS. Both those lenses are in my price range along with the 40D but I am not rushing out on this one for sure. Any one can throw in some input as well, that would be great.
Thanks all.
Paul.