I have been looking at the FMF and the Yoshi and the only videos on youtube of a bike in another country with a RS-4 just sound way to raspy and high pitched. I have no experience with Yoshi systems but is it just me or is that how they typically sound? I like the look of their pipe a lot better being shorter and it puts out good numbers from what I have seen. I just don't think I care for the sound if the one video I found is really what I am gonna get. Anyone actually have this system on their bike and can speak from experience?