Hooker Headers Muffler Anyone?

My current muffler has a rattle in it on of the chambers is broke so I need a new one. I have a Flowmaster 80 series for a 86' Firebird. But I was wondering if any of you guys have or know anyone that has or have used the hooker headers aero chamber muffler for their car. The style that mounts behind the rear of the car. I was wondering what the sound was like and how they liked it as far as durability and such. Thanks alot

OneSickFirebird