I like my Springfield Ultra Compact in .45 ACP, the only drawback is the weight, that gun in SS is beautiful, but heavy. For a duty weapon it' s good but concealed carry not the best choice. What do you prefer a semi auto or revolver, for the semi, I would say either .45 or .40 in the compact models, polymer would definitely be lighter. In a revolver I would say get a .357 snub nose and run .38 special +P ammo. Most would say buy a Smith but I like Rugers better. Keep in mind that if you ever do need to draw it, six rds is probably all you' ll need so I' ll lean towards the revolver to avoid the possibility of jamming at the worst possible moment.