At the moment I'm a plucking-up-courage-to-take-the-plunge user
I've used Fedora since version 1, but it does leave me feeling a bit like a hamster in a wheel. For something more sedate I was considering CentOS or Debian (which I've never felt happy with); Slackware was too much like hard work.
I keep a guest partition to try distros and review them on linuxquestions.org and I'm rather hooked by Salix, which I'm using for occasional sessions. With OpenOffice, Gnucash, and Firefox, I'm almost all set. I'm still deciding if Claws is a suitable substitute for Evolution. As for Xfce, that may be the only refuge for old-school Gnome lovers if Gnome goes all Ubuntu-ish.