Mark -
Nice to hear you're happy with the E-80. We haven't seen this series in the US yet.
I too like the 76 keys on my VA76.
Don't know what to say regarding a 2nd board, for I've never owned the ones your considering, but someone will offer their opinion.
Regards,
zuki
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Live: Korg PA4X/EV Everse 8s/Senn 935/K&M stand
Studio: Korg PA4X/Yamaha DGX670/Boss BR900CD/Tascam DP24SD/MTM Iloud/Sony C80/AGK 214/K&M stand