Have any of You played KORG OASYS?
Its KARMA technology is similiar to Arranger, it has 8 Karma scenes(wich are like 8 variations) and some of those scenes are drum fills, so Workstations (it would be great if Arrangers will be called Auto Music Workstations, than it would be more clear to the world...) may beat Arrangers. But Anyway keyboards(arrangers,workstations,pianos,synthesizers) will never get great popularity, beacause the world is hooked on GUITARS. Keyboards were once more popular during the 80s. So "vote" for keyboards(wether Arrangers or Workstations)