Revolver: more dependable, variety of ammo choices.
Hi Power, cheap plentiful ammo, but not the best choice for self defense
45 in 1911, good caliber, proven platform. not the easiest caliber and platform to master,
+1 for the wheel gun, less to learn, few moving parts, wont jam, wont fail.
45 in 1911 format, great gun, but a learning curve. lot of moving parts that have to be lubricated and held/shot correctly to prevent stovepipe type jams.. just a learning curve.
9mm Browning, High collector value, lowest punch of the bunch as far a ballistics.. also requires familiarization and more maintenance...
A hard learned lesson for one of my close friends...(note to Hi-Power Fans: this could have been any dry, dirty,unmaintained semi auto) He took one through the top of the head, 19days before his retirement.. responded to a robbery in progress, crooks came out shooting, he fired his Hi-Power, it jammed, (not properly lubed and cleaned in a while) he bent down behind his patrol car to clear the jam, crook rounds the bumper and put one in the top of his head.. Lesson here, keep em clean and lubed.. Also, problem solving and management, practice clearing jams, tap n rack. If your gonna own em, ya gotta take care of them. Failure to do so can get costly...