The advantage of a Windows based keyboard would be the ability to add new sounds (sound fonts), new styles, even new hardware, without having to purchase a whole new keyboard. I upgraded my keyboard just to get a new flute sound. I bought the case, keybed, amplifier, speakers, o/s, styles, manual,box, just to get the flute sound. See how silly that seems? . If I had a Windows system, I would have purchased 1 flute sound font.
Starkeeper