Re: Ubuntu V.S. Kubuntu
The beauty of Linux is the choice available. Just try it. Try it virtually, try it live, or spare a partition and do a full blown test.
Reading a comparison will just waste the install time of the above test methods.
Once setup, use it for about two weeks and then YOU can determine what your likes and dislikes are.
Then, do the same for Xubuntu and xfce.
HAVE A BLAST.
irc - freenode #ubuntu-us-pa
"Do, or do not. There is no 'try'."
-- Jedi Master Yoda