Hi guys, I am about to press the "buy" button for the Sigma 70-200mm OS HSM. Will I regret this choice? I can't afford the Canon Mk 2. I managed to find the Mark 1 at US$1450 used, in fact 2 of them and their lens codes are UT and UU. Then one retailer popped up with a brand new Sigma OS at US$1200.
I am gonna go for the Sigma. Does that makes good sense? I am on 5D btw...Thanks guys!