I love my Mugen TwinLoop. It has a nice deep sound, but just barely louder than stock. In fact, it is almost TOO quiet for my taste. Chalk me up for another one that doesnt like the N1 sound. About the only other exhaust I would consider is the Fujitsubo like on Chris N's car. I dug it! Like he said, nothing beats hearing them in person, in/out of the car...the Expo was great for that!