I have to agree with Hunter on the Springfield QC, or lack there of. It really has been hit or miss of late. Of the last 4 1911's of theirs I've bought, only one has been a keeper. The Loaded model was a complete dog and would not feed hardball reliably from the box. Both WWII models had some issues too. The Champion was the only one that seems to run OK.
My Colts on the other hand, have over the years, been pretty much 100% reliable out of the box, even the used ones. In fact, the Colts are one of the few handgun makers I've never had to send a gun back to for repair, SIG and HK being the only others. Most of the newer, Series 80's guns, didnt need the old "throat and polish" either, and fed everything I put in them, from ball or hollow points, to my LSWC reloads. The only thing that annoyed me about the later Colts was the plastic parts, which were easily replaced, so it really wasnt a big deal.
I've had a number of 1911's from just about every major maker, but for the past 30 years or so, only trusted Colts as my daily carry gun.
I only recently quit carrying a 1911 altogether, and made the move to SIG's, first the 220, and now the 226/229 in 357SIG. Now there's no fiddling with them at all, they work 100% right out of the box, and you dont need to send them off for anything.