I am happy with Ubuntu 12.04 LTS which will be supported (read; upgraded )
until 04.2017.
It suits all my computing/ IT needs to date and probably beyond.
Ubuntu 13.04 will be final/official in April and if I were you I would wait
until then ..........unless you your curiosity is infinite.

Yes I have 12.10 installed as well,but I like to see whats coming
up in April when the new the new Ubuntu os is released,plus it helps the
developers iron out any snags.Hope all is well up North,I spent 4 years
living and working on Skye,so know the importance of the internet..