The next tablet I get will probably be an Android one. I have an iPPM1 now, which I'm happy with but I want to have a proper computer UI whenever I use it for laptop style stuff. So you either have Samsung Dex or Nomone Desktop with Debian. In that way you can get both great touch capabilities combined with powerful desktop usage.
Xiaomi is also making very powerful tablets these days.
The problem with DeX is you’re still running Android Apps. And though you have Apps like Office designed for tablets, after the basics the App ecosystem pales in comparison to the iPad.