I have a SIG 220 X6, single action with a six inch slide. Match gun and it's probably the most accurate model ever built, I know that sounds like a line but it's certainly scary accurate.

Love the thing, they also make a 5 inch X5 and a couple of other single action models. The only draw back is it's a big frame and is best for mid to large hands.

Holsters are also a bit of a pain.

Cheaper then a Wilson Combat 1911 though they are a touch expensive.