I've got a Springfield Mil-spec (it's heavily customized now) that has been great. The first 500 rounds through it were in stock form and it functioned flawlessly with hp or range ammo. It is a series 70 gun too. On the lower end I've heard good things about the Remington R1 guns and the Rock Island guns as well. I'd ask the guys over in the 1911 forum for a much better response.
"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud
Black Rifle Club #1989