9mm is a very effective load, falling between 38 Spl and 357 on the power continuum.
Most of the naysayers have never been around a handgun wound and are just repeating and embellishing their old wives tail ignorance.
I know... it looks small because of the short cartridge. However, it's much higher pressure and performs well. It's the choice of British SAS, German GSG9, Israeli Mossad and thousands of other elite units. Just stuff it with good ammo and practice a lot.
Of course, a load of 12g buckshot in the chest will end most confrontations.
You're reasonably well armed no matter which you choose as your "primary". As others have said, carry both.
Last edited by Kmar40; May 2, 2010 at 06:22 PM.