I vote for Colt too, but you'd have to raise your budget to $920 plus FFL transfer for a XSE Government.
Colts are typically out of stock everywhere, so you'll have to wait your turn in line on buying one unfortunately. Buying online at Buds Gun Shop or Gunbroker can give you a better price than local. Local stores often charge MSRP and get away with it because people will pay it.
A Colt will have higher quality parts than most of the lower priced 1911s.
Do your research on what materials Springfield and Ruger use in their 1911s. Decide if the materials used matter to you.
FYI, materials used in Colt's pistols:
Made From Forged Steel:
Slide, Frame, Barrel, Slide Stop
Made From Machined Barstock:
Barrel Bushing, Extractor, Ejector, Firing Pin, Hammer, Recoil Plug, Barrel Link, Plunger Tube, Grip Screw Bushings, Sights, Series 80 Plunger, All Pins
Investment Cast:
Thumb Safety, Grip Safety, Mainspring Housing (Series 70 Models)
Stamped Steel:
Firing Pin Stop, Leaf Springs, Series 80 Actuation Levers, Trigger Bow (alloy or steel finger pad)
MIM (Metal Injection Molded):
Magazine Catch, Mag Catch Lock, Sear, Disconnector
Molded Nylon:
Mainspring Housing (Series 80 1991 Models)