I also really like Solasta's UI. It's clear, intuitive and well organized.
Spells are really well presented, with easy upcasting options. Well sorted, no clutter.
Actions, Bonus Actions and other actions are well sorted. When you have a BA left, it's really easy to see what options you have.
Special Abilities are also easy to find and you can tell by a glance how much per rest resources you have left.
BG3 UI in comparison is just a miserable mess in every possible way. It's like they threw their hands up in the air and said "let the players try to make it work". But you can't.
