My honest advise - go to the September meet!
But seriously, the guys going - you'll hear all types of exhaust, from those with stock to Grzegorz with the loudest...and most in between. That way you can make your own mind up.
I'm in the debaffled camp - and the 03 passed her MOT last year with them. Anything louder and it would need changing - but you'd have 2 years for that!
Gina
03 America - Pretty stock - except the TBS wheel...

06 America - missing, presumed in bits. With it's TBS wheel...

09 America - It's very blue....