I know this is probably a stupid question but would you guys get a leo vince cf for $400 or a arata cf for $520. ive read a lot of threads, and i still have mixed feeling regarding slip ons. dont all slip on yeild the same power more or less? therefore, is it justified to spend an additional $100+ on an arata? Also, i read that you can convert the arata slip-on to a full system later by simply ordering the headers, is this true? i know the answer im probably going to get, but please humor me with your knowlege and experience haha.