See, he's just misunderstood, thats all It all boils down to whatever makes the owner/rider satisfied anyway. The Muzzy and BG most likely make more power than my 300 pipe but they are both too loud for my personal preference. The FMF seems pretty reasonable, although the only one I've heard was the guy that was the install bike for FMF. If I remember correctly they left the stock snorkel and stock jetting in it. My personal experience was that between stock, KDX, and no snorkel the exhaust note, even at idle was noticeably louder. Who knows, with an opened up airbox the FMF may be just as loud as all the rest.