Hmmm ... Harley sound is not what I want. I hate overly loud motorcycles. Keep the eyes peeled for a slightly used Classic Exhaust for sale in the next week or so, possibly :|
I have the Gold Star exhaust system on my bike, which is straight-thru, and I have the removable baffle(same as shown above) removed. No restriction at all.
It is NOT as loud as the Harleys that ride around with open pipes, and it's much quieter than that, even with the baffle out.
It's even quieter with the baffle installed.
Yes, it's louder than a restrictive heavily-baffled muffler, but that's what makes it work.
I have never had a complaint from any neighbors about my bike being too loud.
But, "quiet" is in the ear of the beholder, so it's an individual taste thing.
However, more restriction in the muffler is going to give more restriction to the engine, and it will not run as efficiently, and give less power.
Your call.