Shot placement, shot placement, shot placement.....guys get WAY too hung up on this topic to the point that the uneducated and untrained begin to rely solely on internet information to defend themselves. Practice your ass off with that G19 and carry some good name brand hollow points. A certain type of bullet isn't going to make a lick of difference when you're scrambling for your gun and for cover, only to blindly squeeze the trigger in the direction of the actor. Having the proper mindset to counter the threat and establishing good form and muscle memory when reacting to a hostile situation will go much further than having the "coolest" or "best" SD ammo in your mags. Subject closed.
To echo what someone previously said, run a few boxes through your gun to ensure feeding reliability.