I looked at the Casio MZ-2000 today. I did not particularly care for the sound through the speakers. However, the features were impressive. Eight or nine sliders, pitch and mod wheels, aftertouch, jacks for two pedals and two foot switches. More style and sound categories than Yamaha, but no bank switching (as required by Roland and Korg). Graphic sound editing. The display controls are just like on a Yamaha PSR-9k. Not only is there autoaccompaniment, but there is also an arpeggiator. I am not tempted to buy one, but I do wish in some ways that might next Yamaha were more like this Casio.