This topic has, obviously, come up before here on TFF, but perhaps it would be worthwhile to rehash it again for a bit. Statistically at least, the 9mm Parabellum round has been consistently shown to be among the overall most effective ever designed for self-defense, assuming reliable expanding bullets are used instead of hardball. I'd be curious to see some opinions about the effectiveness of the 9mm as compared to other rounds used for this purpose, such as the .45 ACP, the .38 Special, and the .40 S&W. Let me start off by saying that personally, I like the 9mm and carry one quite often, usually a Glock 26. Yes, I like the .45 as well and sometimes carry a 1911 Colt Commander. Yet, I do think the 9mm offers certain advantages over the .45, at least for civilian carry: 1. Greater ammo capacity. 2. Greater controllability in rapid fire. 3. Less weight for concealed carry in most pistols that chamber the round. 4. Greater concealability in most cases. Opinions?