i somewhatdisagree but i still find it good to read KDistros = KDE base http://cristalinux.blogspot.com/2011/09/king-of-kdistros.html
well i back up opensuse its rocking it never give me any major problem on my hardware minor yes they are but its in every distro ..........i am not kde fan or opensuse but this distro specialy yast alone change my all view on kde. kubuntu is also great experiance the only thing i miss in kubuntu is a tool like yast/control center.