So far UB have been a great ride and easy to use. I have experienced that UB is great for gaming and I’m a big Linux gamer.
The only cons I can find is the ridicules hoards of shortcut in the menu, specific under System Tools. It’s a nightmare to navigate through. Many of these links are not needed as the link to a specific part of the Gnome Settings Center (Settings). I hope the devs clean it a bit up.