I think you're doing the right thing by having the standard pipes and waiting. We'll try to find an excuse to meet and you can hear mine before deciding.... I didn't get the chance to hear it first.
I quite like the sound - but it is moderately loud. A very different tone to a V8 or V12, a bit of a sharper 'buzz' from 3,500rpm (when it really wakes up), quite rumbly below that.
