I have owned an original Colt Gold Cup. The original Gold Cup has several differences from a standard blueprint 1911, and I don't think any of these changes are improvements. In particular, the triggers are very wide and can only be replaced with a gold cup trigger. Also, the barrel shroud where it interfaces with the slide is different, so the barrels (and the slides) are Gold Cup specific. All of this is a pain if you ever want to replace parts, and there are really no advantages.
I know the new Gold Cups have the traditional wide Gold Cup trigger, and that is enough that I would not touch one. Get a 1911 on the standard blueprint where all of the 1911 aftermarket parts fit. Even if you don't plan to change anything, the whole point of a 1911 is the aftermarket is broad, easily available, and compatible.
Why Colt kept any of the old oddball stuff on the Gold Cup I really can't imagine. They could have just kept the name, and put it on an upgraded and tighter tolerance version, and that would have been fine.