What do you envision controlling them with?

Unless you strip off all the buttons, sliders, knobs and the great big diplay, it's going to cost pretty close (if not more, because of economy of scale) to what the keyboard version does...

And I have yet to see any MIDI controller keyboard with enough knobs, sliders and a touch display (or Yamaha style 'buttons surrounding the screen') for full arranger control. With an arranger, it's VERY important which side of the keyboard which controls are... If you can't have a bank of buttons (for Variation and Fill select, Start/Stop, etc.) VERY close to your LH's chord area, you are screwed...

Count how many of the controls you actually use on your current arranger, and where they are positioned. Now look for a controller with the same layout. Not so easy, is it?

[This message has been edited by Diki (edited 11-03-2009).]