I owned Tyros 2 (I don't mention before, because all those keyboards before does not had sampling)...
I bought a Tyros 2 after I hear the sound of our country music sampled in it... Amazing sound! I did not to much in details when I bought it, because I loved the sound. So I have sold my car and did it. After some time spent on it I realize that Style Creator is very poor and I cannot make things I did on Korg. At that time I did not knew about this site, and I did not knew about those 8 hidden channels. So I was very disappointed about that limitation

. After a couple of months I heard from a friend about some software which can help me create styles with multiple chord variation on the same variation using those hidden channels and I start using it and I made some very good styles at that moment. But after a couple of months Korg released PA2X, and I heard it at a gig and I told myself I have to change my keyboard and I did it. A little bit of fear a time, because I was not taught with all those functions and parameters, a lot of them, comparing with my T2. Indeed, sound was not as my Tyros 2, it was more poor and "flat", but I found that people who listen appreciate more that Korg sound. After some problems with my PA2X (the keyboard continuously blocking when tried to play some mp3 files or load some text files - I found later it was a bug which Korg repaired couple of months after I sold it), I made a switch with a new PA3X. New functions, new FX-es, new inserts, new Guitar Mode in Style Recorder, indeed a new keyboard

And I sang some time with PA3X, a very good keyboard. Tyros 5 was released and after I heard the demos of Martin Harris, I was in loved by that new sound! And I did not stay to much with PA3X and switch again to my first love, Yamaha.But this time I new I have to beat my head against that Style Creator, which was not so much improved from Tyros 2 to T 5. So, now I have to start from scratch and to made all my gig songs's styles... I had about 4 months to complete all the work, and I did it. This time, the release of Korg PA4X was not so much important to me, because I work so hard to made my styles on T5 and I thought it's time to stop changing the keyboards. I heard about all new Korg's functions and really I was bummed a little...
I expect from Yamaha to a new look and new functions.. and they give us Genos. It was like a Tyros 6 to me, not another keyboard, with only new Live Controllers and assignable Sliders... Sincerely, the important functions are the same: Style Creator is the same, Song player is the same (maybe poor a little, IMO), MF replaced by Playlist, 8 to 10 registrations, black, with 76 keys and shorter than T5 76. BUT.. the GREAT improvement they did and really which was the best thing was "Touch Screen" and for a short period of time also the insertion of effects which it happening to be useful, because you cannot save them into registration with modified parameters. That is my POV. I really go forward with Yamaha because I like the sound, but the functionality, is very poor, IMO. Korg is the best when come to modify and save the parameters, creating styles, voice harmony, Voice editing... That keyboard is really an AIO (All In One) in the world of keyboards. For someone which have time to spent to make sampling is very useful, or to buy Dynamix Audio sample packs, which btw are very good samples.
Finally, I deal with Genos as it is, working with workarounds, working with other software on PC to make the job completely, hoping another update will solve some negate bugs, hoping they will awake and they will make this Genos an AIO keyboard - software, because hardware exists

Your "job" clarifies a lot of things, and I recommend Genos, not Korg. You need sound, you don't need sound and functions

Edited: (because I read your last post

)
Korg's interface is very ugly

It is very poor, icons are very poor and elementary, indeed, is not so user friendly as Genos is... But for someone who need professional editing tools, you don't find them on Yamaha, till now. Korg has almost all parameters editable and writable in realtime, even if you sing something!
The keys are also very different... Test each one, but I think you will be 80% for Genos, for some reasons
Regards,
Vali