I'm saving for a 70-200. I've historically been pretty much a prime lens guy, for speed, and sharpness. Folks are finally convincing me I'm not giving up much (if anything) here.
I really want a 2.8. I don't think I'd be happy with an f4. Even at 2.8 it will one of the slower lenses in my bag.
I am most concerned with weight/handling. I'm in the process of selling a 150-500 (my only zoom). I really like the lens, but I find i just don't carry it/use it much due to weight/handling. I realize that is in a different league, but still concerned.
Is there a big difference in weight/balance hand-hold-ability between the Canon IS/Non-IS/Sigma options in this range? Does IS add much weight? Truthfully, I am leaning toward the canon 2.8 non-is, as I have the 200 2.8L, and do not really feel the lack of IS there. I don't know if I could swing the canon 2.8 IS II anyway. I generally buy used, but that can still be alot of shekels.
I would truly value any thoughts from folks that had used multiples of these.
(if anyone has a 70-200 of some flavor, and wants a 150-500 we should talk)