Unless key feel doesn't matter to you at ALL, the PSR's are the worst feeling actions I've ever played. At the exorbitant price they ask for them, and the fact that everybody else somehow manages to include a decent action at the same or lower price point, Yamaha should be ashamed.
I've played toys that had crisper actions. Hell, my accordions have crisper actions..!
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An arranger is just a tool. What matters is what you build with it..!