If you have been trying Kubuntu, and have had enough of it, the alternative is the “K” version of Open Suse.
The main Open Suse page is here.
However, it looks like you have to download a 4.7 Gig DVD. In fact you do not, click the link below, and then click on the “Live KDE” icon, where it says “A KDE desktop you can run from CD or from USB stick”. This takes about 40 minutes to download on ADSL.