Not to hijack too much, but I might point out that even the lowliest Roland arranger (E50 and up, I guess, anyway) have the ability to easily edit any style, SMF or Keyboard voice. No messing with sys-ex, no nothing. Couldn't be simpler.
If I were a Yamaha user, I'd take a REAL close look at the Makeup Tools on a Roland, then bitch blue bloody murder at Yamaha until I got that feature...
