Hi Paul
I was wondering about foot controllers myself and appreciate the part about using the Merge on the PK-5. My guess is that the MFC10 would allow one-button octave shifts. But you do not have to guess; as you probably know, you can download the manual for the MFC10 from Yamaha.
I have been perplexed about the availability of foot pedals. One octave would seem to be too little for most applications. 17 does seem more practical, and 2 octaves ideal. But, as I remember, the PK-5 also has foot switches, whereas the bigger ones do not seem to. Maybe the two PK-5s is a good idea, if you do not mind the extra C.
By the way, Paul, why don't you use a sustain pedal or switch to sustain string sounds? Maybe then you would not have to switch octaves so often.
[This message has been edited by Clif Anderson (edited 12-05-2000).]