Hi,
I have the meisterschaft Gt SUS muffler with section2 race version.
As Nick mentioned it is the louder of the two versions they sell, but in my opinion, it isn't too intrusive.
The reason i got the section 2 is because it doesn't fit with you stock pipe if you only get the muffler. The muffler was 2500. Section two was 450.
But i have to say the sound is amazing. I wanted a little more loudness on the high end, but it is a nice low end rumble.
Her's a video that made me get it.
Enjoy!
by the way, they only rev it to 5500 rpm since it's in brake in period