All I can say about Sig 1911's is...WOW! They got alot of neg reviews and criticism when they first started being produced, you either got a great gun or a complete lemon. I believe most of it was due to the very tight manufacturing tolerances that gave people alot of feeding troubles. But now, after a few years of production, they seem to have got it right. A bit more than a year ago, I purchased a Revolution STX and I cannot tell you enough how much I love this 1911. Very high quality, very accurate and by far my favorite pistola. I kept telling myself, If there were 1 gun Id bring to the grave with me, it would be my beloved REVO. Well, An injury at work and one lumbar spinal fusion later, I had to let her go (along with a few others). Now all I have to carry is my little ultra cdp, which is still a great gun, but I really miss my Sig. Oh well, Im 30 yrs old and dont think a little back surgery is gonna keep me from continuing my so wonderful career, so there will be plenty of time for me to buy more guns. The next gun I buy will be another Sig 1911, and another, and another...Im sure you get it, lol.
Enough with the life story. Good grief. The point is, Sig make great guns. They have an outstanding reputation and great customer service (Victoria is my go to gal at Sig). So if you are looking at purchasing one, I can recommend 3 that I have owned or fired...Of course the Revo STX, the C3 (that a friend owns) and an RCS Nitron (or RSC Nitron, cant remember) that the same friend owns. Excellent guns, cant say enough about em.
Hopefully their will be a few more members here that may be able to share some experiences with you.
Later.