Those people who have the resonator out and dont mind probably have some kind of chambered muff out back...and most likely a stock cat...I have been astounded at how much louder my car has been since installing the hi-flow cat...those that have deleted the cat know what I'm talking about.

If you go with a resonated tip I think it will probably help with a raspy exhaust note but they wont quiet things much...muffler choice is much more important.