Did you hear that Don Mason - you've lost your dynamics.

Gary
It's very simple....Play your PSR and record the midi data...and you will find your dynamics gone....you will have a string of 100 values( I think Yamaha only measures 100 and not 127) for velocity...that is full filtered sound...Most likely you are not even aware...You lose the key feel with light touch, and a weighted keyboard allows this touch to be manageable..
Sorry, you will lose this argument...big time
BTW: Don's SD7 is not the light touch of a PSR..