What is so good about Arch Linux that people keep going on about?
Have to say, I really don't like Ubuntu, except for MythBuntu.
As a general OS, I don't get on with it, Mepis for me (or Fedora 14, new versions are awful).
To me though, Mepis just works. One of the only Linux distros that worked with my wireless out of the box.
I'm running Kubuntu 12.10 at work and Fedora 17 (KDE spin) at home. You can never get enough KDE