I have an early Kimber (before the II) Custom, and it was as you describe the Sig. Smooth action, good trigger. The new Kimbers seem to be hit or miss on quality.
While the Sig 1911s have some silly names, I have shot a few of them and they are good to go.
"The 1911 was the design, given by God to us through John M. Browning, that represents the epitome of what a killing tool needs to be. It was true in 1911 and it's true now." - Col. Robert Coates commanding, U.S. Marine Corp Special Operations Command Detachment 1 (DET 1)