Your choice of what gun to carry, along with how many rounds, also has a lot to do with your mindset and what you’re prepared to do.
Is your firearm ONLY intended to get you and yours out of a bad situation, with no intent to assist others? If so, a subcompact and no more than 20-something rounds is more than enough.
Is personal protection for yourself and your loved ones your PRIMARY purpose, but you also recognize that you could be caught in an Active Threat situation? A situation like that doesn’t care how aware you are, or how many swivels you’ve installed in your neck.
In the case of an Active Threat, is your intent to bug out as quickly and safely as possible, or do you plan on being part of The Solution? Statistics prove that in the case of an Active Threat, the quickest way to shut them down is to get a Good Guy with a gun on the scene. The FBI has agreed that it doesn’t matter who that good guy is, civilian or LEO; the quicker an armed Good Guy gets involved the sooner the situation is resolved and the less folks that are injured or killed.
I intend to be The Solution, instead of leaving the scene with a loaded weapon while innocent folks are hurt and killed. I arm myself with that in mind.