Best doesn't = loudest... I hate it when an ehaust is loud all the time. The only time an exhaust should get loud is under aggressive accelleration. Thats one quality of the Nismo exhaust thats better than the Stillen. It may not deliver as much HP but it sounds aggressive under accelleration but nice and tame at a 75MPH cruise.
Exhausts tastes vary by individual, and theres an option for every taste. I prefer not to sound like a Honda Civic with a fart can on the back personally...
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