1) Springfield or 2) Colt. I prefer Springfield. For around a grand you can have a reliable, accurate, and durable 1911. I have one TRP Operator that I have put well over 50k rounds through, most of those rounds were 230gr GDHP courtesy of the Feds. Change the recoil spring once a month, and run powermags; http://www.cmcmags.com. I rarely cleaned it, just kept it lubed, and it ran in all kinds of weather. Only malfunctions were ammo related.
I do minimal modifications. All I do is VCD grips; http://www.vcdgrips.com and if the sights need help I put some Dawsons or Warrens on there; https://dawsonprecision.com/sights/ That's it. I've learned the hard way that the best way to keep my 1911s running is to do nothing to them but shoot them, clean, and lube them.