Over the years I have owned, Psr2100, Tyros 3, S970, S975, Korg Pa800, Pa900, Pa4x. I had the S975 and the Pa4x side by-side, my opinion:

My S975 is not a Genos, but it is a Yamaha, is like a brand-new high-end stereo player. Dancer LIKE the sound.

The Pa4x digs in, not just with great sounds, but with a drive dancer will LOVE, they are not able to resist.

Now who are you? And how will you be using keyboard? – that must come from you, we all hear differently.

If I am not able to get my Kn7000 repaired, there will be a Korg Pa4x in my home very soon.
John C.

John-so you still have the 975?

John,
After four years I'm still finding exciting things about the PA4X. All the modern arrangers are great.
I've had arrangers since they were invented in the 80s and before that organs. I've had at least 14 Yamahas, 5 Korgs, 4 Technics, 7 Rolands, 6 Ketrons and a couple of Casios and loved 'em all! Kinda like women.

A word about Piano studies and music theory.

1-Go to the piano or keyboard and play a two-octave scale with your right hand in the keys of C, F, G, Bb and Eb three times each day – Maybe 10 to 15 minutes. Do this for 5 weeks and there will be a difference.

2-Don’t learn all there is about music theory, just add these simple substitutions.

Whenever you see a G7 going to a C Major add/Sub
G7 --- Sub Dm7 G7 C ----- V7 --- Sub IIm7 V7 to I
G7 --- Sub Db7 to C ------ IIb7 to C
G7 ---Sub G7 Db7 to C ------- V7 IIb7 to C

This does not fit with all kinds of music. How and when you use them is just another expression you may add to a song. Learn these Subs in different keys.

I can’t help myself, I love to teach, John C.

Sparkey -- Mr. The older I get, the better I was, Yes I do. Why are u asking?

I love that saying.
John C.

I love the way you express yourself --loved 'em all! Kinda like women.

Nice, John C.

Coming to a decision on something new in coming months.

for my taste MELODIKA is the best

oh and also my PANTHER ELKA ORGAN that i had in the 60s