To add for my own esperience, I, like Fran, I do not midi them. Perhaps because I am a former organist, I am use to several keyboards.
I almost feel "naked" with only one keyboard, I used the 3000 and the PA60 for almost a year before replacing the 3000 for the Tyros2, I use them currently independantly, I also use 2 VOlume pedals (in a board I put them very close so with my foot can balance the 2 boards at the same time, also, 2 sustain pedals). And before the PSR 3000 I used the Ketron SD1 with the Korg PA60 too.
Besides the factory stlyes, I have a selected huge user styles in both, I never get bored and so my audiences, as an example, I can play let's say 20 foxtrots one after another without repeating pattern, with a great pallete of stlyes and sounds, is GREAT !!
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mdorantes