I had occasion to install Centos 5. The installer falls a long way behind openSUSE's, by a country mile. The GUI configurators are inferior to openSUSE's Yast, by a long way inferior.
However, the stability of Centos is really nice to encounter, the apps all work, that's the Centos raison d'etre.
We don't get that with any release of openSUSE. OpenSUSE is always cutting-edge stuff, consequently always buggy, and that's a product of the short release cycle. That's Novell's policy and I have no problem with it, none at all.
But I do sometimes yearn for an OS where the apps just work. In particular I use a lot the interoperability apps where windows machines talk with Linux machines. It bugs me that things like VMware, RDP, VNC don't work easily (or at all) in opeSUSE, Knetworkmanager is still a bit iffy too. A few other things.
Oh well, can't have everything. OpenSUSE is still streets ahead of the other short-cycle leaders like Ubuntu and Fedora. I won't be changing my everyday OS from openSUSE because I can sidestep most bugs and I like the other very superior facets of openSUSE.
But wouldn't it be good if there was a free LTS version of openSUSE? That would be number one in my Linux wish list.