Henni you are not alone in your discovery; I too have found a world of beauty in in Yamaha styles and keyboard. The more I dig into my S970 the more it is becoming one of my favorites. (My taste)

Some of Yamaha’s OS is similar to Technics; although I owned a Psr 910 and a Tyros 3 I never took the time to appreciate it.

John C.
PS, There one thing that Fran Carango taught me – you cannot learn the true value of a keyboard without spending the time to learn all that they put into it.