Well, I have the very same problem: I was going to buy a XP-30 soon, but now I don't know what to do. Can anybody make a comparison about this two keyboards? (XP-30 and RS-5/9)
I mean, I know the RS is not expandable and has less than half the patches of the XP but...
-Is the sound quality really superior on the RS?
-Is it true (as I've heard elsewhere) that you can't save edited patches to memory?
-Are the RS's sounds as editable as the XP's?
-How good are the orchestral sounds of the RS(one of my main reasons for buying the XP)?
-What about the keyboard? Is it better or worse than the XP?
-Do the realtime controllers in the RS (knobs, I think) send MIDI data as XP's sliders?
Hope someone can help us.

LP