Thanks George for the reply. I'm assuming that you feel I should disregard the PC2 and the 88 weighted-key 2600, since you didn't mention them in your response. Also, that you feel that I will like the KF 90's piano/string setting so well that I will forget about the MicroPiano unit ? I didn't mention that I also have a Korg i40m. Thank you George for your fountain of wisdom. dogman.