I've only bought one 1911 pattern, a 1994, blue, Colt Govt. model enhanced. I bought it new. Out of the box reliability? Let's see. From the beginning, several times per magazine, the hammer and sear would mate in such a way that the trigger could not be pulled. You could stand and yank on the damn thing until the cows came home, and nothing would happen until you thumbed the hammer (yes, the gun was cocked, not half-cocked or uncocked, it just wasn't cocking properly). After a few months, and less than 500 rounds, the firing pin stop cracked, the cheesy white paint spots on the lousy sights fell off, and I experienced occasional failures to feed with ball. The slide would also lock back on a loaded magazine from time to time. I didn't keep logs at the time, so I can't be more specific than that. It works now, after replacing the sear, hammer, and disconnector, the thumb and grip safeties, and using Wilson mags. It should have worked when I bought it, though. My P7, in contrast, didn't have it's first malfunction of any variety until 1800 rounds, and that was caused by an underpowered handload that didn't cycle the slide far enough to chamber another round from the magazine.
Most problems with autos are caused by operator error or bad ammunition, but sometimes it is the gun, and that's far more frequently the case with 1911s than with Sigs or Berettas. Just a fact.