Tried the Gen 1 .45 when they came out and couldn't hit the broad side of my ex wife's ass! Swore em off forever as just a goofy, blocky, ugly gun.
A friend let me (ie-made me) shoot his gen 3 .40 cal... Damn! Felt good, made holes right where I aimed!
They're still goofy, blocky and ugly, but either they changed or my hands changed... Much more gooder now!
I still don't understand why they're named the way they are.. If yer gonna have a 9mm gun, just call it a Glock 9
And maybe "compact, carry or full size". Same for all other calibers. I'm not smart enough to know the difference between a 17, a 23, a 26, or whatever.