Honestly- I really like both Ubuntu and Kubuntu. Sadly, I know neither as well as I'd like to.
For the longest time I've wanted a rig that I could dedicate to both Distros. So I could experiment and dabble with them. I dare not do such with my primary rig cause far too many times in the past I've borked a windows install because of something I did within my linux install. Don't want to risk losing all the family pictures and videos, as well as my large music collection.
So until I can get enough money aside to put together a cheap rig that I can dedicate to these two distros, I'll be sticking with Windows.