Thanks, yeh the scorpion one is coming out around that price, had a look at whats going on here and although I'd be very tempted by the NISMO one £650 its pretty steep for me at the moment. I know you should always go for the best possible but what are the main advantages of something over a NISMO over a scorpion or a K1, sorry I have no idea about exhausts, I was happy enough with the standard sound.
Yeh saw a video of the K1 and it does sound a bit crazy, might be tempted if its a good deal though, sorry about my ignorance but who are CS?