In listening to the GM modules with Z5500 speakers, the accompaniment was far better with Key Rig and Hypersonic. Maybe Key Rig was second of the two. I liked Hypercanvas Sax the best, but of course that is very subjective.

Bernie
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pa4X 76 ,SX900, Audya 76,Yamaha S970 , vArranger, Hammond SK1, Ketron SD40, Centerpoint Space Station, Bose compact