You see...? There you are, looking at Korg's, because Yamaha don't consider the needs of the advanced pro piano playing arranger player...

SURE... they've got toy DGX's, and REALLY heavy Clavinova's, but there is this huge gap in the line for what I imagine most pro's (and even the same 'unwilling to use a heavy arranger' PSR home users, too) probably actually WANT. How easy would it be to sell him an 88 weighted (at P85 standards) S900..?

But nooooo...! You've got to jump camp to Korg to find anything even CLOSE to what he needs. The action of a P85, the innards of an S900... how easy would it be to sell a boatload of those?
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An arranger is just a tool. What matters is what you build with it..!