I always end back up on leap when all the other distros piss me off, and I always wonder why I even bothered with anything else. It just works for me.
It is one of the best KDE distros, the yast config took is brilliant, the installer is great, it has fast servers in Europe (fedora installs and updates are way slower for me) and on top of all that it has a cool and instantly recognisable logo.
The only real nagative in my experience of opensuse is the long install times.
I am a pretty simple user though, I only really use Firefox and Emacs.
I'm constantly trying out all the ones I can find but so far connect is the only one where I can customise the colours. I love me a sepia theme!
Luckily it's also great in other ways.