Muffler question- flowmaster vs. ?

I inherited Super 44’s on my car and I hate them. Car guy neighbors think they sound great as I drive by. Inside the car, which is sound insulated, they’re loud, and there’s a nasty low bass drone at about 1200 rpm that’s hard to talk over. That’s with a dual exhaust crossover pipe, too.
Kern Dog, that’s an interesting chart, thanks for sharing. Who took the time to test and publish that?