I still think that the best home defense gun is a pump shotgun with the shortest legal barrel.
Any criminal in your home immediately recognizes the sound when you're racking a shell into the chamber.
Maybe some of you have been in close quarters, infantry combat.  If you have, then you know how high the adrenalin gets when you are about to be blown away, or blow someone else away, whoever shoots first.
How accurate you are on the range with any weapon is little indication of how you'll handle a real "kill or be killed" situation.
My secretary's husband is a police officer who had to fire his weapon in anger last week for the first time in his 7 years on the force.  Unfortunately, he had to shoot a German Shepard whose nut job owner had sicked on him.  Even though it was a dog, and not a person, he told me that he had tunnel vision for at least 10 minutes after, from the high blood pressure and adrenalin boost of having to shoot.

9 bangs from s&w 1911 then reload, and yes it is a nice grouping