I have to take a dodge in another direction here...
Get a Taurus Judge for Home Defense.
Revolvers are almost idiot-proof. Even a gurl can use one
(My wife will smack me later for that...LOL)
The Judge lets you use either .410 shotgun shells or .45 Long Colt,
either of which will cause grevious bodily harm to bad guys.
Ribber Grip reduces felt recoil, and fits in almost anyone's hand.
Buckshot from a Judge solves a LOT of problems in a hallway/typical house/apt room.
Point & shoot...no tricky safties to forget about in the heat of the moment.
Cocking it will let the BG's know that it's time to tactically retreat...if they are dumb enough to
keep coming after hearing that, it's their own fault (Darwin'ing Out).