Hard to argue against the wisdom of a higher capacity gun or a gun in a larger/more powerful. Yet the most important rule in a gunfight is to have a gun. If a person won't or can't carry a larger gun, then what good does a 17 round mag do if it's in the safe at home with the gun? I carry smaller pistols in warm weather due to clothing restrictions. Everything about concealed carry is a compromise. Otherwise, we would all be walking around with a 12 gauge shotgun.
Jim's Rules of Carry: 1. Any gun is better than no gun. 2. A gun that is reliable is better than a gun that is not. 3. A hole in the right place is better than a hole in the wrong place. 4. A bigger hole is a better hole.