If you're looking for a bassy sound, but really tame exhaust note? Add the magnaflow system to the list.
I came from a Borla XR1 on my old Ram, while I LOVED it? 2am cold starts leaving the ex-girlfriend's place on a frozen street was the V8-symphony. Live, in concert.
Starring, the 5.7 Hemi.
Featuring, 400horsepower.
It was a little much!
I actually felt bad.
Next time around I figured, "Go more tame."
The magnaflow full exhaust system has their big 22in muffler, but I believe a cutaway would show, it is a "straight through" design too performance wise. Flows very well. The exhaust note is VERY controlled at the top end of the noise range, coming from the XR1 I was actually disappointed at first!
Then I got on the highway and there wasn't any drone.
Over time the exhaust has sweetened, sound wise- I would not say it's loud. It's not punchy.
I don't wince on cold starts.
It's got a bassy tone and stays that way, like a "far away thundercloud."