>>7349293barrel break was probably one of the coolest, but my favorite was the stripped down recon cs6. a handgun with a fat clip full of sniper rounds was just about the coolest thing i ever got to play with. I think the n-strike series was my favorite just for how interesting the mechanics of the guns were. While a thousand balls in a hopper is more simple and effective, its boring as fuck and doesn't require much creativity in design.