[TexasRedeye]

With all the nice, concealable 9mm out there today, there is no reason to carry anything less. Loaded with +P+ ammo you get all the stopping power (arguably) of a .45 with less noise, recoil, weight and more concealability even with an OWB holster under a t-shirt.

[Captiva]

Ugh. I just had a flashback to rec.guns from the 1980’s.

Handgun round stopping power is a total myth.

For every one stop .45 ACP anecdote there are three .22 caliber one stop shots anecdotes to go with the perp who took 11 hits from a .45 and kept on going.

Everybody reacts differently to being shot.

There is no such thing as +P+, or P++, or ++p++. That’s all Guns & Ammo magazine marketing hype. There is no SAAMI spec for the plus plus p loads - just varying velocity.
http://www.saami.org/Unsafe_Combinations.cfm

Just ask those goats in Strasbourg.
http://www.thegunzone.com/strasbourg.html