There’s a lot to like about openSUSE these days. The package selection is very good thanks to the Open Build Service, the development approach is middle-of-the-road so that you don’t get stuff that’s too old (Debian) or too new (Fedora/Arch), and anybody with a modicum of Linux skills can build their own custom version of OpenSUSE with SUSE Studio.
A lot of distributions like to claim that they’re good for everyone to use. OpenSUSE really nails that: it’s easy enough for beginners but includes features for power users as well, mainly through their YaST control panel.
I, too, switched away from Ubuntu after Unity, and KDE on SUSE has been my home ever since.
I will definitely check out OpenSUSE KDE.. I am pretty partial to KDE.. not many of the others give the flexibility of KDE.