David,
If I were in your shoes, I would not even consider the 9000. Though it was a good keyboard in its time, by today's technological standards it's an antique.
Gary
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)