I've owned 2 357 sig Glocks, one was the 32 the other a 33. Great caliber there's no doubt about that but the sound that it makes its ear popping. Believe me, even with ear plugs in, you're bound to go deaf just shooting that thing too much. If you ever had to use the 357 sig in self defense you would probably suffer irreversible ear damage, as would everyone around you. I myself have opted for the 45 because no matter what round of sig you are using, it is most likely to penetrate through a person and hit someone else as well.