Cheap - Norinco GI. Bare bones no frills gun, likely with machine marks and some grittiness and sharp edges, but apparently very reliable and the steel is great.
Intermediate - Springfield Mil Spec. Only gripe about these guns is the parkerizing is not the best. Then again the only parked gun I have is my 870 Express. Seems like it would show wear marks quickly - I would love a Mil Spec stainless and almost bought one.
HighER - Colt. I have a Series 70 Reproduction GI. Does not have the flared/lowered ejection port. No firing pin safety, or rail, or any of that. Beautiful rollmarks, bluing, fit and finish is top notch. I love this gun.
All of the other guns I looked at had some sort of downside to them when I was looking at a "GI" style 1911. The Norinco was very bare bones, and I try not to support China as much as possible (not trying to debate you if you feel differently, just my own opinion).
The Springfield's parkerizing felt cheap and not very durable so I'd have to re-do it/really monitor it.
The downside of the Colt is price and availability. It's an expensive gun but I believe it to be worth it. If you can't find one, import one.