DP,
Regarding your "if that's your preference":
There's countries in western/central Europe where right now noise regs have become very strict. Police sometimes uses biking events to stop bikers for measuring the noise level and when it's too much they'll give a hefty fine at least. In some countries they'll even have you remove the silencer or system and hand it over to the officer and you'll have to leave your bike on the spot and have to arrange a way of getting it home silently! There's even tracks where only a couple of days a year are allowed to have the higher noise that racers have and on all other days (so all track-days for us normal folk) your bike better has a stock or silent aftermarket exhaust as they keep measuring all day and when yours is too noisy you'll be sent home with no refund for the trackday.
So, I'm waiting for the Akrapovic with their most silent (German ABE type) muffler to become available as it's the ONLY option that will probably lead to slightly better performance and sound while still allowing me to go to more trackdays at Assen with it.
Animal (a.k.a. BiggerOne).