I will have to say that eventhough the SD7 and SD9 have some newer goodies, the venerable Audya is still a keyboard to be reckoned with. Now, the SD40(to me), is a different story as I could use it in conjunction with other instruments with a small 4LB footprint. I am thinking it and my SK1 Hammond.
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pa4X 76 ,SX900, Audya 76,Yamaha S970 , vArranger, Hammond SK1, Ketron SD40, Centerpoint Space Station, Bose compact