I echo this. I keep coming back to Ubuntu and Unity. I also find that Unity is a superb interface, it's a launcher and docker in one. I've tied my middle mouse button to the workspace switcher so a middle click shows a nice expose of virtual desktops, then right-click to zoom into the desktop I want. This is really handy when working on multiple projects (which is all the time).
Originally Posted by JaSauders
I've tried all sorts of DEs, from the Flux/Openbox type to Gnome3 and KDE, but I find Unity the most efficient interface. Gnome 3 came close, but I had to install Docky to get what I wanted. The permanently hidden app bar was a pain, too. But that's just my opinion. For me, Unity simply hits the sweet spot in terms of efficiency, speed and design.
I use 12.04 LTS in work, and 13.10 at home (after running the Fixbuntu script - the online lenses spun me out).
I've used Linux from the early days when there were only Debian, Redhat, and Slackware and their early derivatives. Mandrake was my favourite distro back in the late 90s for ease of use. For the past 5 years though, I've pretty much stuck to Ubuntu, which I think is the best all around mainstream distro that's come down the pipe. I've toyed with other distros, but I keep coming back to Ubuntu and Ubuntu or Debian are all that I use for my servers (minimal VM with no GUI that is) with the exception of one SUSE server that I didn't have much choice about.
I've been using it for years, but as of recent I've been stuck on Arch (Antergos Specifically). Once you go rolling-release it's hard to go back.