Xubuntu. While regular Ubuntu switched back and forth between Gnome→Unity→Gnome, my Xubuntu install looks and works pretty much the same, except with less bugs

Xubuntu. While regular Ubuntu switched back and forth between Gnome→Unity→Gnome, my Xubuntu install looks and works pretty much the same, except with less bugs than before, and even some new features that don't get in your way (e.g. better hidpi/color management support). At the same time you have first-class access to Debian packages, so you don't have to feel left out in that way.