Aside from critics (or insults) expressed in this post , we use since our migration from vBulletin in 2015, UI.X 2.
In this thread you can see the evolution of our theme from 2016 onward:
Hi, I would share with you our config of Xenforo, based on a vBulletin 4.x import in 2015. So, this is the Forum Home As you can see is a huge UI.X modified version, lot of edits are in the EXTRA.css (you can download it from Console). In Forum Home we used a sprite custom icons and used...
xenforo.com
This is the live version (with light and dark)
We bought and tested PixelExit (Bolt) from
@Russ and tested AC.UI (got it for free from Audentio)
@Mike C
And we found them pretty interesting (for different reasons).
UI.X 2 is really heavy as a theme (we did a lot to make it perform better). But never disappointed in 7 years of use.