Rolandlover,

Since I've owned both, I'd have to say the EXR7s has a much better keybed than the Korg PA50.

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