And yes, that switching octaves bit is a HUGE pain in the ass. Half the time I hit the undesired (but not "wrong") note because I had no idea where I was, I just knew "yes" notes and '"no, don't effing touch this" notes. I often know the note that needs to be played next, but often did not hit that one!
Oh, and glad to hear about your Moog Source
But I'll respond directly to that thread...