I actually like Unity. I do wish it were more customizable, though.
In the year and a half it's been out, I have managed to get things working decently (and convinced Mozilla to allow Classes again).
I do want to experiment with KDE a little more-- I want that level of power over the desktop, but I am comfortable with Ubuntu and Unity now, so I may try for a Unity-type desktop in a KDE environment.
KDE is powerful enough to accommodate me, the question is whether I have the time and patience to train both myself and KDE to get where I would like.