As much as I love the feel and look of my brand new Springfield 1911A1 "Loaded" stainless model, I would choose my "shot up" HK USPf 45 that I purchased used, as my favorite .45. It is utterly reliable and accurate, and the recoil very tame. I would trust the HK over the Springfield to function flawlessly in almost any condition. I just wish the grip were less blocky-feeling, but that's a minor gripe.
Sam