Deciding between similarly priced Korg or Yamaha , like Korg PA-700/900 vs Yamaha PSR-S775/770/950,
Don’t care about vocal harmonizer.
Mostly about styles and sounds and maybe onboard wav/mp3 player - recorder.

My styles- genres: starting with most important:
Ballad,
Acoustic,
(Eastern) European Waltz and March,
Country and Bluegrass.

So far the thing that I really like about yamaha is the ability to expand it with Eastern European folk styles and sounds.

Consider Roland EA7 as well. It has lots of EU styles and sounds.

I have a pa700 which I highly recommend as it meets my needs.

Vadim, from what you are saying in your post ------

My styles- genres: starting with most important:
Ballad,
Acoustic,
(Eastern) European Waltz and March,
Country and Bluegrass.

There is no contest. Yamaha is the best for styles, and sounds. I have a Korg Pa1000. Since I will not be playing out any longer, I will sell it and buy the replacement of the S975.

Only my opinion, John C.

Watched few videos of it on YouTube.
Really like the design of the controls of buttons and sliders, that I really really like.
But didn’t like the sounds at all, styles probably would have sounded good IMO if sounds were better

I Have both a 775 and a 700..along with a modx8 and vr09..hits all my boxes.

I don't think you saw the good videos that are out, most videos on the Roland are Eastern styles, check these out:

click here

also here:

click here also

another good one
ckick here 3

Sud Claviers are in French but they have the best demos