I'm going to 9mm and 45acp as my two handgun calibers. Doing away with 40 so I can shoot more at more reasonable cost. Since current ccw is a G23 and I'll be selling that, now I'll have to choose between 9 and 45 for ccw. I'm still a little skeptical of stopping power of 9mm despite bullet technology which has gotten a lot better. I'm thinking of sig p220 carry or p227 carry. Any advice on choice of weapon?