Just a quick update:
I am using Ubuntu Saucy Salamandar on my laptop since the past 10 days. Everything is working like a breeze, even though this is a pre-alpha version!
However, I expect breakage once new versions of packages “actually” start coming in, like the new version of X etc. I am eagarly awaiting to test “Mir“, which should be available as a technical preview in Ubuntu 13.10.