Some new style parameters were introduced with the Pa800 that brought Korg about on-par with Yamaha as far as style control. They both have very similar parameters, which is one of the reasons styles convert pretty well from Y to K, and vice-versa. Both are way ahead of Roland in this important regard.

Surprisingly the top-end Casios allow a decent amount of control, but they take a different approach combining many settings in one table. Also, there isn't near as much content, either factory or user-created.