Colts will always be the nostalgic favorite and for good reason. For decades they not only were the only game in town but they have always been very well made pistols. Then there is the snob appeal that follows the reputation, kind off like owning a Rolex. As far as the OP question as to quality consider this Colt always uses forged and not cast frames as do several other makers. Some people prefer Made in the USA pistols although the Brazilian made Springfields and the excellent examples from the Phillipines are worthy of consideration. There are a lot of good 1911s being made today and it seems like everyone is making them now. To me a 1911 always had to be a Colt but I have to admit to liking some of the other makers 1911s also. My wife bought me an "E" SW1911 for Christmas that is wrapped under our tree at this moment. But I did sneak a look at it and took some photos before she wrapped it and was impressed to say the least. Maybe next Christmas she'll buy me one of those beautiful Wiley Clapp Commanders.
But getting back to quality, even Colts cheapest ever version the 1991A1 is a quality pistol, and the later ones even more so. Therefore my first choice will always be a Colt, but then I'm an old nostalgic type of guy.