Will test Ubuntu but sticking with Kubuntu
I'm a KDE fan. Tried the Gnome version of Ubuntu but felt uncomfortable with it. There is a scene in Zoolander where the two models jump up and down around a computer while trying to workout how to switch it on: that's Unity for me. It is horrible to use.
For me, KDE works the way I do so it works well with me. KDE gives me a taskbar, a "start" menu (Kicker), contextual options when I right-click on an item, a search option (Alt+F2) and I can configure KDE to make it more comfortable for me to use. I guess it is the same for Gnome and Untiy for those who use them but the idea of a homogeneous GUI across all device platforms, though a good ideal, is a bad idea: I use different appliances for different purposes and need a GUI that makes best use of each device's screen real estate and interface options (touch, mouse, keyboard, voice etc...) while maintaining a comfortable feel. Different device, different purpose, different screen size, different GUI requirements.
Will test Ubuntu 13.10 in VirtualBox just to see what it is like but my main desktop environment will remain KDE for now.