Assuming you didn't have to worry about cost differential, what's your favorite pistol round for CCW/self-defense/general use? Both of my handguns are 9mm (G19 & G26). I'm thinking about getting a Glock 20SF (10mm) with .357 and .40 conversion barrels. 3 calibers in one gun FTW. Then all I'll need is a .45 and a .38/.357.