The Tyros2/3 (and T4) use a new action, called FSX, which is different than the one in the original Tyros.

The S-910 and PSR-3000 use a much lighter action (which I prefer) and they also do not support aftertouch, which the Tyros does permit.

If you don't like the PSR action, then the FSX should be fine.

Ian
_________________________
Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.