colt 45 isnt too big.. concealable and all.. its the one i usually carry (the .357 i got is a little heavy, and its a fucking cannon that the whole town would hear) and it has quite a bit more stopping power than a 9mm... though some/most 9mm's are faster firingif ya want really small, grab a 25 automatic like no power to those pesky little things.. but very fast, at close range you can obliterate most targets