What’s your purpose for the PCC? My favorite is the MP5 (or sp5?/whatever the semiauto name is), but that could be nostalgia. They’re great guns, but the trigger sucks, mags are stupidly priced, and optics mounts are limited. Outside of the OG/SAS factor the MPX and CZ Scorpion EVO are probably the most fun to shoot, but they have their problems. For a knock around gun, probably a Ruger PC carbine/Glock mag. It’s pretty much a 9mm 10/22 takedown.