I believe what made the Technics OS so good was it's ease to learn.
I had 5 technics keyboards and one digital piano and I am not sure if I ever had to open the manual.
When you turned them on and selected a style you were immediately reminded of several songs to play with that style and sometimes I would play for an hour with the same style.
The only reason I sold them all but one is because of the heavy depreciation that commences once you have an orphan. In the final analysis I am still a business man.
The E -80 Roland I just ordered would have been the Technics KN8000 if they hadn't of dumped us all out in the middle of a wasteland
Best to all
Bebop