I love mine. My favorite feature is the flat trigger. My finger finds the sweet spot every time. The trigger is smooth and light; the reset is very short (I think it's shorter than my G19). Since it's a heavy gun, keeping the sights on target is relatively easy. The sights are pretty nice too. They are a combo of a green ring with tritium tubes in the middle. I think they are easy to acquire.
I recently took a handgun course at the Sig Academy and took my 226 Legion SAO. Swiping the safety on/off is effortless. The fact that it can be carried cocked and locked is huge. It allows you to go single action immediately there is no heavy double action pull like the DA/SA Sigs, Berettas, etc. I signed up for 2 more courses and will be using the SAO again.
ETA: Raptorfuel- I use the Blackpoint Tactical Leather wing and mag pouches. It's moIded to allow the user to carry cocked and locked. It was an awesome holster for me during the day long course at Sig. It was hot and muggy and the holster didn't bother me at all.