OK. I got a nice bonus from work so I am gonna get a 70-200. Question is do I want the f/4 IS or the 2.8? Part of me wants the 2.8 while the other wants the f/4 IS. JB, which do you have? Would you get it again? Complaints? I am leaning toward the f/4 IS because it is lighter. But I don't want to make a $1K mistake... Wanna kill these ads? We can help!