I freelance for my school paper at Ohio State and have been really focusing on the sports assignments. So I'm looking at switching out my lens lineup here a bit. I'm really across the board as far as the sport; hockey, football, basketball, soccer, etc. And a mix of inside outside. I don't use my 24-70 /2.8 hardly at all so I'm thinking that's going to go so I can get something with a little more reach. Right now I'm thinking about the 300 /4 IS/non IS or the 35-350 /4-5.6 or the 100-400 /4-5.6. As much as I'd like it I can't drop that much cash on the 300 or 400 /2.8. Then I'm looking at upgrading my Sigma 70-200/2.8 to a Canon 70-200 /2.8 I. So I guess anyone have any input here on some of those lenses for sports in general?