That Supertrapp in the video is considerably quieter then my Fat Cat, with the quiet baffle.

I'm very happy with the fit,appearance,performance and quality of the Fat Cat, but it is still a bit too loud for me. I would rather have the loudness of the Supertrapp, in the video, or just a bit louder
I've had my bike for a little over 5 years and the first 3 years it had the first generation Samson, Rip Saws drag pipes on it, with no baffles. That setup was outrageously loud.

The reason I switched to the Fat Cat was to lower the exhaust volume a bit. The Fat Cat, of course, is quieter then the drag pipes. but it surprised me as how loud it was, at least with my SE 103" engine.
Tom