I use Linux Mint. I started using Linux in 2007 and was an Ubuntu guy. When Ubuntu switched to Unity I wasn't a big fan. At the time, Mint was providing an experience fairly close to what I was used to so I gave it a try. It does everything I need so I haven't looked back. I don't tinker as much as I used to and it's very stable.
Also have a windows install I use for gaming and music production, but 95% of the time I'm on mint.