I voted Sig rail gun. I have a Sig Scorpion and it's one of the nicest 1911s I own. It also serves as my nightstand gun since it can handle the railed light and comes with night sights. When you feel the slide on the Sig compared to everything else I have, it has the best feel by far. This is as compared to Colts, a Kimber, a Springfield and a RIA. That Sig just feels like it's on ball bearings.
I have fired the Basic Colt, not impressed. I own a R1 Enhanced and very surprised and impressed with it. I have a Kimber Eclipse and would take the R1 over it. S&W I don't do, I do not like external extractors.
Of the choices, I voted SIG rail gun. Lights are always a fun option to have, but they limit holster options.
If it were going to double as a carry gun, I would go with the Colt of those listed.