Depends on more than just what muffler you run, like pipe size, x-pipe, h-pipe, no cross pipe, length of muffler body, where muffler is from front to back, headers, what size headers, no headers, engine size, horse power...on and on.

I run the long case Dynomax Super Turbos with no drone at cruise. However I do get a slight drone at 1,600 RPM and at 2,100 RPM. But at speed it doesn't bother me. On the road I usually am running at 2,700 RPM and higher. Have fun.