What's your opinion on these two pistols? This will be my first 45acp and I currently have a sig p220 CPO on layaway at my LGS but the have just gotten in a p220 carry in reverse two tone(which I love by the way). It is new and only about $150 more than the CPO. I know that both have the same frame just a shorter barrel on the carry version. Do they shoot much different from each other? If you had the option, which would you buy?