[Ricochet]

I've never seen shotguns as reasonable tools for airsoft. Any CQB gun or pistol would have a much higher potential for effect. Shotguns are okay for cool factor if that's what you're going for. As for distance, even at higher velocity they don't stack well at all versus other systems.

Springers make a 'thud/doink' sound, but the gas ones I've seen or shot are typically louder, but that doesn't mean they all are. If you're going to actually field it avoid shell-ejecting.

If you're going for cool factor, get a nice big metal, shiny gas one. If you want to go for effect, get a short tri-shot that shoots good and hard.