my qualifications for a good carry weapon:
1) goes bang when you pull the trigger, repeatedly
2) you have trained with it till its operation is second nature
3) you actually have it with you, in a good holster, when the bleep goes down
some rounds are more effective than others, but they are all effective it you can do your part and make the hits. That is the extend of my limited knowledge. If you can shoot it well, and conceal it well; it's perfect!
82 will be my next pistol purchase after my rifle build is finished