Short bio: Computer Scientist, FOSS supporter (read more)
Tux Machines (TM)-specific
Kubuntu may not be the best implementation of KDE but definitely one of the most followed. For me, Kubuntu has been always a judicious mix of KDE and Gnome applications along with a boring default interface.
Kubuntu 13.04 alpha 2 release note came in Distrowatch on 15th Feb 2013. I knew apart from KDE 4.10 and the latest Linux kernel there won't be many changes from what I reviewed in Kubuntu 12.10. Come on, in 6 months what earth shattering changes can you expect!
However, the bright interface of Kubuntu and amazing smoothness in use actually surprised me. Initially I was thinking of just live boot and testing Kubuntu, but instead opted to install it on my Asus K54C laptop with 2.2 Ghz Core i3 processor and 2 GB RAM.