My brother has an SW1911 he purchased new earlier this year. It's this version:
http://www.smith-wesson.com/webapp/wcs/stores/servlet/Product4_750001_750051_764907_-1_757754_757752_757751_ProductDisplayErrorView_Y
Unfortunately, it has been
very dissapointing.
After a few trouble-free mags, it began to exhibit failures to go into battery - usually about every other magazine, but sometimes several times in one mag. We thought it might be a mag issue, so he bought a few Wilson mags and got the same problems. He's sent it back to S&W twice, (and thinking it might be hanging up on the slide stop, had a new slide stop sent free by S&W).
He also shot the heck out of it, thinking it just needed a serious breaking in. Also tried stronger recoil springs. All to no avail. After well over 1000 rounds, (and all the other hassles) it's still exhibiting the same probems. No exotic ammo either - all round nose, mostly WWB, Federal, Speer, and a little UMC. He's also the kind of guy that keeps his guns very clean and well-maintained.
At this point, I think he's so disgusted with it, he just doesn't shoot it and doesn't even want to think about it. I feel really bad for him - he saved up a while for it, and we've tried just about everything we can think of to get it functioning. Too bad - it's a really nice-looking and very accurate gun, and it sounds like he's in the minority when it comes to problems with the model.