ive been with suse for a while now, and I tried to change to Kubuntu, but i just couldnt use it because I didnt find it configurable enough, I couldnt find all the settings even in the control centre thing. I heard that using ubuntu and then installing KDE ontop of it helps, but isnt as efficient as Kubuntu.
I changed because I heard that everything worked easier on Kubuntu, but I had to move back to openSuse 10.2 because its so much more configurable