I have an early 1990s Colt 1991 Gov't model. It has always been a great shooter for me, and surprisingly accurate. I have no idea how many rounds fired over the years, but several thousand. I had a trigger job done and the ejection port enlareged, installed a steel arched MS housing, and shot the hell out of it. The only thing I have done, maintenance-wise, is to occasionally install a new 18 lb spring. I also have a couple other Colts, all good pistols.
My newest 1911 is a loaded Springfield. The OD green kind of caught my eye. This has also been a great handgun. A few more bells and whistles. The only thing this pistol needed (for me) was a steel arched MS housing to replace the flat factory ILS housing. I haven't shot it that much, maybe 500-700 rounds. No problems.
Either one is a good choice; the SA has more features already added on.