I'm with Cameron, side pipes are a pain on the road.
Apart from the noise, I have a genuine fear. That is that some young kid, my grandson maybe, runs up to welcome me or to look at the car and uses the pipe as a step up.
Don't get me wrong...I'm not critical of those using them...but....I really have this fear and would never forgive myself if that ever happened.
So...it's pretend ones for me...nice and quiet, and saves me hanging around until the pipes have cooled to leave the car.