My only want would be an PSR-S900 with a 76 note weighted, hammer action.
It has everything else I need...great OS, lots of styles, built in speakers, excellent sounds.
Dislike Roland's OS, lack of contemporary sounds, heavy weight(on TOTL models), pitch/mod paddle.
Can't comment on Korg, Wersi, or Ketron, because I haven't played them.
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Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.