I doubt you will see the FSX on MOTL such as a 950. In the past Yamaha has put a Synth Style keybed on the 900 Series that to my taste was too light. They have reserved the FXS for their TOTL Arrangers and Workstations. You can always get a pretty nice semi-weighted Piano keybed on a MOX8.
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joesax
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Tyros 3, Motif XF6, Quad Amp/Pre-Amp/DAC, Quad Monitors, Tascam Digital Recorder