It depends on what you are looking for. Cache and I have Muzzy exhaust systems and I like them far better than anything else out there and for the price you can not beat it. Also I could tell a difference in power from the stock full system and the Muzzy full system immediately, even before getting it remapped. Know back to your orginal question, Muzzy is not the loudest system out there but if you like low end grumble with a Barry White sound at higher rpms, go Muzzy. I have gotten a lot of complements on my system because not a lot people have a Muzzy on there Busas. Muzzy=Kawasaki Yoshimura=Suzuki (or Hindle) in most peoples mind.