I am currently trying out Alpha 1 as I haven't run a dev release in some time, but I do have to say that 13.10 is shaping out quite nicely. It is SO fast right now, the last time I had this kind of speed was back during 10.04.

I'm using the standard Ubuntu, not Xubuntu (since Xubuntu didn't opt in). I am planning to stick with the vanilla Ubuntu from now on as I am curious about the upcoming Mir implementation wondering how it performs over X.