How many rounds ? What kind of ammo? How many different brands/types of ammo? People have widely differing definitions of reliable too.
Besides, my comment was half tongue in cheek. I've had many different 1911s over the years. Never any high end stuff. Lots of Colts. And while some of them fed reliably with most ammo, almost none of them ever compelled me not to have something done to them. Triggers, feed ramps, guide rods, match barrel, springs, whatever. In my experience unless you go straight out of the box with a Dan Wesson or Les Baer or Wilson Combat, etc. etc. They are almost never "plug and play". With a few notable exceptions. One of my favorite guns is a parts gun that a buddy of mine ( 12 years US Navy small arms instructor) brought home a few pieces at a time. Loose as hell, rattles like a diamondback and shoots ever so slightly to the left. Never jammed, never once, thousands and thousands of rounds. I also have a Phillipino Charles Daly that my dad bought for some unknown reason for about $400 brand new that has never given me any trouble other than it clearly doesn't like Ed Brown mags. Wilson Combat and Kimber mags and it will run anything, all day long. Although now that I am thinking about it I believe my old man had my buddy do a little work on the feed ramp shortly after he bought it.
As for the SA stuff, I have never even held one, but considering the breadth of all the threads about them here they are hit or miss at best.