"I have the Hooker Aerochamber mufflers and they are pretty quiet, but can get kinda loud when you really open it up. "
Any chance you have a sound clip or can get one of these?
Michael Yount I just recently installed a summit catback along with my 1 5/8" shorties and OR H pipe, they sound nice but are by far the queitest setup I have owned! Very very close to stock but with a bit more performance sound. There are others that sound better but at this point in my life I'm tired of people telling me to slow down when I go past them at 25mph and having neighbors comment at their sound. Plus there only $15 a piece, you might want to give them a try.