Sound is always subjective. If hearing the exhaust is a large portion of your riding experience, you'll want it dialed in to suit your taste.

I like the staccato sound of a V-twin. V-8's sound good. 4's & 6's,,,, eh, not so much. Just 'what I'm used to', I guess.

I may be delusional (again!) but the sound of OEM pipes on many of my bikes has gotten better w/age vs. brand new. Not sure if a little carbon builds up and 'cancels/absorbs' some of the higher tones,,, Not a night and day difference by any means, but seems to be noticeable.

The mod bug keeps biting me for some pipes, but I'm not sure I really would appreciate the increased sound level. Been spending my $ elsewhere.

For all intents and purposes, the F6B is a 6 into 2 system, regardless of slip on or even t-loops. The true 6 into 6 pipes on the old Valks had a 'character' of their own which did have an appeal. Not gonna happen on the F6B until a 6 into 6 system is created. (Don't hold your breath!)