Just for the record:
I've read that the RS-5/9 has more or less the same editing capabilities of the XP-10 (So I suppose only ASDR and effect editing?).
Also, a reply to some posters: Personally I think the discussion was mainly about sounds & sound quality of the boards, not about the keyboards. Of course it's not the same 61 as 88 keys! then, perhaps it's better to compare the XP-30 with the RS-5.
See ya,
LP