The time has come for a cat back system for my 90 miata. I'm thinking about replacing the cat while I'm at it too. Can anyone suggest a system that is noticeably louder than stock, but not too loud, while at the same time not having that tin can ricer sound? I've only heard .wav files of a flyin' miata dual tip and a borla system. Does anyone have or heard a Jackson Racing or Racing Beat system (with or without resonator)? Or does anyone know a website with audio clips of different systems? Thanks.