9 mm gun, what to get?

Concealed, a Kahr PM9, small enough to carry in a pocket. Don't want a semi auto, a Taurus 605. Home defense, Mossberg 590 Special Purpose. I know it is not a handgun but hard to beat a 12 gauge for home defense. Or use what I have laying on the dresser, a S&W 500 Magnum, if you miss the guy you shot at will probably be deaf and have a load in is shorts.....