I see the grumblings too, but thoroughly enjoy making my Pa4x the best for me. I have always tried, also, to make every arranger I get, do it all. On a basic level I can, but every one seems to have their plus and minus, not bad, but different. As far as grumbling is concerned, look at the negatives Ketron gets, yet IMHO, the Audya is the best keyboard I have ever had.
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pa4X 76 ,SX900, Audya 76,Yamaha S970 , vArranger, Hammond SK1, Ketron SD40, Centerpoint Space Station, Bose compact