I guess someone has to call a spade a spade and that means Bachus that you are getting to be very tiresome here and I mean no disrespect. Your comments are very copious indeed and more often than not about keyboards you do not own, have not owned and have no intention of owing. I would tread slightly more carefully here. Particularly if there are folks such as Squeak and LindaFus who speak from personal experience and have every right to be annoyed with Casio and their new product.
I also sympathize with PA4X owners and even Ketron SD7 owners who have also been used as beta testers for way too long and at too high a price. I do not recall Yamaha marketing products that way but I may be wrong there. But let's not get off topic again and stick with the Casio MZ-X500 and the findings of those who can relate to it from personal experience.

regards,
John