I also had several Electones, a D2B, E10AR, FX1, HX1, HS6 with all the modules and the EL90.

Yamaha has the D Deck is about 2 years old, I am pretty sure that it has been the replacement of the Stageas.....USB drives at front, touch screen, also with the optional pedals, bass pedals etc.

Check it out:
http://www.youtube.com/watch?v=9OakuD0GcQA http://www.youtube.com/watch?v=7u4nHH1cloc&feature=related this is not the best demo, but at least you see the similarities.
http://www.youtube.com/watch?v=RzxrLYaWt5c
This last one, is a GOOD one....Marco Cerbella plays "Jurassic Park Theme" (D-Deck)

Enjoy.

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mdorantes