The difference is that the personal protection is optimized for shorter barrel pistols (3" and under) LE is optimized for full size service pistols (4" and greater) in practice, both are adequate for either type. Please see shootingthebull410's excellent videos on both. and one of the other posters is correct, 115gr is too lite, 124gr or 124+P in gold dot will definitively neutralize just about anyone. My personal choice for both is 147gr Federal LE HST, most accutate in my S&W shield and Ruger American pistol. (shield for carry, RAP for home protection)