I used the Radio Shack Piano as a controller to my 9000 Pro last night... it made quite a difference in my sound and playing. Having access to those upper and lower keys going from 76 note to 88 really helped, and the action of the RS Piano is sooo much better than my 9000 Pro. I don't plan on using the internal sounds of the RS Piano much anyway so the 32-note polyphony is a non-issue - this is a great MIDI controller not to mention a handy practice tool.