you can have quiet exhaust with headers and a catback. stick in a good pair of mufflers and couple good resonators.
when i had my sentra se-r i had header, no cats, took out my downpipe resonator and left the APEXi WS2 catback resonator in. barely heard the exhaust until you gave it a decent amount of throttle.
i wouldnt mind picking up a couple WS2 mufflers and replace my loudmouth mufflers.