the borla is nice in the 2K-3K range; after that there's no difference from stock. at cruising speeds its pretty quiet. there's no drone due to the fact that at 2500-3K its pretty weak sound wise.

my favorite is about 2,200 rpm; it sounds like stock with an added boom thats an octave lower than normal. i bought mine used for $330 (shipped) off this forum; i would never pay the $600 it costs new. for $300 - $400 its worth it --