^
Listening to all of the sound clips provided in the ASB shootout, its too bad the CES didn't perform as well as the others because it sounds absolutely great!
IMO the vasty majority of aftermarket exhausts are so similar to each other (and better than stock), go with what you like regardless of the tiny HP difference.
Sound bites on Youtube are laughable for comparison in the real world. An i-phone mic, overly compressed when uploaded to you tube, then broadcast through minuscule computer speakers is hard to tell what it's really going to do. Especially when these emit so much bass