Now I know that the new Yamaha S90 Synth has the same soundset as that of the Motif, accept for the additional triple-strike piano, but I'm wondering if the S90 shares the same bread and butter sounds with the Tyros, taking into account the different amount of RAM allocated to the sounds. I have always thought that the electric pianos on the PSR 550 upwards were really good, even with the smaller built-in speakers. In addition, are there any SWEET VOICES on the S90 or on any of the add-on boards?

Check out sninety.com. or Motifator.com
Their Forums will be more in tune with your line of questioning. very helpful and informative. Good Luck B2