Starkeeper,
Yes I have XG works. I like using it, but often I'd get frustrated because of the problems I ran into because I lacked the proper instrument definitions. Yamaha (those weenies) released the 550 (essentially the same thing as the 540), and still has not released any instrument definitions for the keyboard..

Squeak
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GEAR: Yamaha MOXF-6, Casio MZX-500, Roland Juno-Di, M-Audio Venom, Roland RS-70, Yamaha PSR S700, M-Audio Axiom Pro-61 (Midi Controller). SOFTWARE: Mixcraft-7, PowerTracks Pro Audio 2013, Beat Thang Virtual, Dimension Le.