Korg and Yamaha have this thing beat in regards to the style tracks.

My little S900's mega voices sound far better (and read ALL chords perfectly) than the demos I've heard so far, especially if I isolate the mega guitar tracks.

The demos from the Korg arrangers with their new upgrade are equally fine...in fact, even the Roland styles are better...well, not really, but they at least have drum tracks that are as good.

Ian