Personally, I'm not a fan of the 147 gr 9mm ammo. The early stuff--when the FBI in all it's bureaucratic wisdom deemed the 147 gr to be superior--was later found to be pretty crappy for self defense. But the newer 147 gr ammo appears to be good stuff. My personal favorite self defense 9mm ammo is 124 gr +P but I wouldn't turn down a case or two of 147 grain if you offered it for free.