I find it interesting, however, that the construction quality that apparently IS good enough for arranger players is NOT good enough for their Workstation customers (who pay no more than you do!).
Why do WS users NEED better construction than we do? Is it maybe because they aren't willing to accept shoddy Yamaha toy construction and low duty cycle components because their competition makes quality keyboards?
Yamaha have pretty much the low end market to themselves. And, IMO, the build quality is suffering for it. Competition improves the breed. Complacency accepts when the breed lessens. If Yamaha's customers to a man complained about the disparity between the build quality of $1700 keyboards they make, as responsive as you keep saying they ARE to your needs, surely they would take this seriously..?
Put it this way... If Yamaha's PSR line WAS built to MotifXS standards, you wouldn't be complaining, would you?  
  
 It IS possible to imagine an improvement to a Yamaha product, isn't it?  

It's in your hands, and under your fingers.
[This message has been edited by Diki (edited 05-12-2009).]