Thank you guys for your responses. I am convinved that Motiff rack has a superb sound as compared to the older Yamaha modules. But still in the almost $1000 range. Its too expensive for my need. I only need the awesome sounds of that cheappy plastic toylike PSR. I already have a PSR-GX76 which is better sounding than the QY's and MU's. I just don't want to bring or set up another keyboard on the stage.

Have guys seen the Diskclavier GranTouch piano? It has a separate module on its side under. That thing sounds really amazing. Is Yamaha selling those module separately? or will it work if we connect it to a synth controller?

Dan