I sincerely believe the absolutely best piano sounds I've ever heard from an arranger keyboard was from the old PSR-5700. It was a beast of a keyboard, tipped the scales at more than 50 pounds, only had 35 styles, and maybe the same number of voices, but the grand piano and vibes sounds were absolutely outstanding.

Cheers,

Gary cool
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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.)