In terms of decibel level is there a "performance" muffler between a Walker Super Turbo and an OEM muffler?

In terms of decibel level is there a "performance" muffler between a Walker Super Turbo and an OEM muffler?
I dunno how a Walker "Super Turbo" muff is, but if it's too loud for you, there's a few guys on here who recently bought the Pypes brand "Race Pro" muffs, and say that they
re not that loud at all, yet they definitely aren't restrictive since they don't even have any baffles in them. instead, they merely have a perforated pipe going through the case which has steel mesh wrapped around it for sound deadening. I bought a pair of these for my car, but I haven't installed them yet. I'd get the 18" long ones If I were you....

http://www.pypesexhaust.com/mufflers.html#02

http://www.pypesexhaust.com/mufflers.html

I believe walker = dynomax.