You might try to find a roland VR 760.
I think they are out of production now, but you will have a light weighted board to replace a hammond, rhodes,wurly etc... all in one.
No need for an outboard soundunit and waterfall keys!
I use one since three/four years now and never looked back.
Fred
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Keyboards/Sound Units: Kurzweil 2600S, Roland VR-760, Acces Virus C, Roland G-800, Akai AX60, Minimoog, Machine Drum, Roland R8-M, mediastation x-76