[Yo-Yo]

I thought that the 9mm is a complete waste as a self-defense weapon — at least that’s what I have been told by the .40 bots and .45 bots.

"The only good defense ammo is one that starts with a '4'"

Maybe, but shot placement counts for a lot more than caliber.

[Labyrinthos]

Maybe, but shot placement counts for a lot more than caliber.The 40/45 bots will contend that if Zimmerman had used a defense ammo that starts with a "4," Martin would not have had any last words after getting shot.

IMHO, the best defensive handgun is one that you will carry and practice with and be able to consistently double-tap with into a 10" kill zone at seven to ten yards. If you can do that, then there's a pretty good chance that you will be able to do what you need to do at five yards or less when subjected to a potentially deadly attack.