The VR760 has the best organ sounds I've heard ( subjective of course ) since I actually played on a B3. Great Rhodes emulation too, maybe as good as the one on the Motif. I don't know how heavy it is though. The 760 definitely has caught my attention, as I like to play a similar style to what you do want to do Nigel. The staple sounds it excels at are perfect for 60's and 70's era rock. Still, I don't think I'd give away the Motif to get one, polyphony issues or not. I need that extra synth editing power it has, and while the 760 seems to have some synth sounds that may be programmable, I'm not sure it can compete with the Motif in that area, especially with the AN150 plug in I have in it. Still, I would love to have the VR760....
I'm not doing anything yet 'til I see the Motif ES, so for the time being, I'll live with what I have. You have some good choices out there Nigel. Now ya just have to wade through them all to see what fits you best.
AJ
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AJ