With my MagnaFlow and ANSA tips, I got plenty of low growl at idle.
It got irritating at 2000rpm.
Revving it up sounded good, especially at 3000-3500rpm.
Letting off the gas quickly netted some really nasty rice-crackle-pop...
until I put on a CHERRY BOMB behind the cat in the long section of pipe.
It immediately made the exhaust note mellower with no popping.
That was months ago and it still sounds good.
I still don't have a new sound clip of that yet.
The original clip is in my Uncle'* computer and it was a bitch to download and find a place to get it posted.
Trust me on the Cherry Bomb idea, though.
It worked out nicely.