Don't bother reading. its sour grapes from Key of G. To do a comparison you need to be objective and give equal space to both keyboards not one liners to the kn6000 followed by a half page telling you how wonderfull the psr9000 is. Having looked in other discussion groups there are a lot of unhappy yamaha owners out there so next time you decide to do a comparison either do it for 2 keyboards you don't own or try and do it less biased as your comparison comes across as sour grapes on your part