Magnaflow Stainless muffler
I narrowed down the list of mufflers to two (2) for my Ford 460. The first was a Gibson MWA. Nice muffler - but too loud. I settled for the Magnaflow. Once the exhaust was installed with a rear-exit tailpipe, the 3"in/3" out centered muffler had a low-rumble with no indication of resonance inside the cab, even while downshifting from a higher rpm range.
Injen high performance mufflers 2 3/8 inch Honda Accord V-6
The Injen high performance mufflers were perfect for my wife's car. The 2006 Honda Accord V-6 comes stock with two resonators, which I left attached and the sound is perfect for her car, a low and quite rumble, which intensifies as you run the rpms. More sound would be realized if one or both resonators were removed.