I can do without the coffee can full of nuts rattle of a Duc thank you very much... to the point where my dry clutch Ducs have the Barnett "quiet" kit (one thick steel plate that goes on top and muffles all the rattling)
But the loudest exhaust I have ever heard was the stock Silentium pipes found on the early bevels. The thing would set off burglar alarms for blocks. Open pipes are quieter... those mufflers AMPLIFY the noise.