I use Gnome3 but with Cinnamon simply because its one of the few ways to be both using a newer desktop environment and have an experience (after a little bit of moving things around) that looks like what I am used to, like and want. I love tablet UIs... on my tablet. I realize designers/developers of UIs want the elegance of one UI paradigm to rule them all, but content production on a desktop and content consumption on a mobile devices are not at all alike.