I have Cargraphic Loud on my n/a 996 and love it. I've had it for almost 2 years and done some 3 hour trips with no problems, can still enjoy the radio. Every track event I go to I get compliments on my exhaust. Too loud to sneak around the neighborhood but it doesn't bother me on commutes or long drives. It's the best sounding at the track IMO.
k