Choose between Simon Yorke S9 or transroto Zet1

You have to audition it or not consider it or take a risk. Those reviews may mean exactly nothing. Clearly, you want a very neutral, balanced sound with highest resolution possible. And the rest of your system should be up to the task, of course.
If my Nottingham Spacedeck does not lack highs and lows, I seriously doubt that Simon Yorke does.
I could suggest adding Brinkmann to your list.

I have this stupid rule of mine. When it comes to turntables and I am in doubt I go for British not German or American. I could be wrong of course.

Soundimage, yes, getting the right table is difficult, and the more you are prepared to pay the more difficult it actually becomes. Just in case you haven't thought of it, some people like TW Acustics tables. I am not familiar with them. It's a German firm too, I guess. Also, though it is probably not at the level of Simon Yorke, and again I haven't audition it, but what some say about Fletcher Audio Omega Point Five table and Zero arm catches my attention. It is designed by late Tom Fletcher, the founder of Nottingham Analogue. But I don't think it is available in the US though can be bought from England hopefully with the correct voltage for the motor. It is getting popular in Europe. The price there including VAT is about $10k for table and arm. Next time I am in Europe I will certainly try to listen to it.