Hopefully people will pay attention to the fact that you`re asking about stock,original exhausts.
My (now sold) Royal Enfield 500 Woodsman (carb model) was almost excruciatingly loud at speed and on the over-run...it was fruity enough just on tickover.
The bark and crack at speed was truly awesome.
Headaches started after about 50 miles!
In fact,I found it hard to believe that it passed the noise regs at all and seeing as the Woodsman was a stock Bullet modded by Watsonian Squire after import I reckon it was never re-tested once in Woodsman format.
It would be interesting to find out what bikes are louder in stock format,if any are !