I think the report was well done. I own an X1, the wife a KN-6000. I haven't heard the 9000 - he has, as well as the 6000. ANY report written in comparing keyboards is going to be biased by the individual writing it, as it is being written through their ears and ease with the unit. If I were to write a report the X1 would be the top unit. If my wife wrote, the 6000 would. Another member said the new Roland is tops. None are except to the individual writing the report. But I do enjoy reading other peoples perspective about the units.