hi i am riding cbr600rr 08 model thinking to change the exaust encan to either arrow or leovince, but recenlty went to hkl and the saleman recommend me the scopion encan carcon firble just onli $850. just to ask isit gd to take this scopion exaust? if not which exaust should i take for my cbr 600 arrow or leovince which is better. Thank you