Donny, good post, very informative.

When I bought my Sx900 I made a decision to use the features that Yamaha offered. I put aside the “if only thinking. I had to learn to think like the people who designed the keyboard.
The result is that I am contented with my Sz900. It does things that I want -- with class.
Would I sell it? Depends --- on what the new keyboards offer. Until then I am a happy camper.
John C.