i have the gibson setup, the early one and am satisfied with it,, is it the best, i don't have a clue. i've only run the stock and the gibson. unlike some people i dont have the funds to test all the systems. some work better low-mid range, some work better mid-hi range. your riding style will tell you what you need. some systems sound so obnoxious, the will drive you and those you ride with wild. last summer one of the people we ride with got a new t-rex and put duel exh. on it, it sounded so bad, even he admitted that, and he took it off. so buyer beware.