The X2 GS is amazing! The licensed & certified GS soundbank in the X2 GS makes all the difference - whereas I was a bit dissappointed by the X2, I must say that the X2 *GS* sounds as good as my Roland Sound Canvas. I can highly recommend this module; now I have 2 clear favorites: the S2 for low-cost, and the X2 GS for high-end GS / GM MIDI Sound. Both are worth every penny! Thanks to @serdef for making it.