Shot placement and bullet selection are very important. Be aware there are many 9mm offerings, and they are NOT interchangeable. A 9X19 (also known as 9mm Luger and 9mm Parabellum) with a good personal defense bullet and proper barrel length has the potential to be good for personal protection. Quite often, the handguns of Israeli military officers who protect their government officials are 9x19. If I were to buy a 9mm, I would first make sure it fits my hand and natural point of aim well (as with any firearm). I would also want it to be rated for +P ammo. A 9x19 in +P offers around the same energy as a low to medium power 357 Mag.