Using 13.04 now, and I tried reasonably hard to keep away from unity. Eventually I gave up when I couldn't deal with the small annoyances like screen tearing in XFCE and the buggy feeling of plastering Gnome3 over ubuntu. Im running Unity on 13.04 now and it feels stable and polished.
However, I dare say I could actually do away with the unity menu and replace it entirely with synapse and although I am used to it, a global menu is a stupid paradigm.
