If this means anything to you, when I purchased the Yamaha PSR2000 (of which shares nearly the identical OS navigation system as Tyros2) as a followup to my Technics KN5000, I was able to start gigging with it in less than a week. Though I admit, Yamaha's hardware sequencer editing sucks, in all other respects, I feel Yamaha's OS is just as EZ (or easier) to navigate as Technics. For sequencer/midi editing, I concur with Bebop, finding using PG Music PowerTracks or Sonar the best choice. I prefer seeing everything graphically on a 'large screen' monitor than having to press numerous buttons to find sub-menu windows on the much smaller LCD screen of ANY arranger keyboard, both KN7000 and Tyros included. - Scott