I have often tried Ubuntu for the same reason as described below
(feeling that Kubuntu is a 2nd class citizen) but I have always gone
back to Kubuntu. It is really a question of choice and of what one feels
comfortable with.

Now that KDE 4.* is going to be part of the 8.10 Kubuntu I can't wait to
install it from scratch and (hopefully and expectantly) enjoy it. I do
use 4.1 in 8.04 but it is alongside 3.* and I want to start from the
beginning from a clean install. This is my plan for the beginning of
November.

I have had a lot of
help from people here and the similarity between Ubuntu and Kubuntu
(despite the differences) allows me to have the privilege of an
excellent forum to learn from (and hopefully occasionally to contribute to).