I had the flow fx muffler on my truck originally, I thought it was ok. Slight drone from it. I wanted something a little more cleaner in sound, so I jumped at the opportunity when someone was selling an unused s type. It was damaged during shipment for him, the tips were bent. That was ok for me because I wanted to keep my factory black tips anyway. For me, the exhaust is just right. Very clean and smooth sound, sounds loud when you are not playing music with the windows. But you can still hear a nice growl when you are accelerating. I barely hear it when cruising.