As far as Suse is concerned, the 9.2 release in the midst of the Novell transition -- the jury is still out. The 2.6.8 kernel itself posed challenges for this release that, granted, a little additional time would have helped smooth out. But, all in all, I think the true litmus test will be how we do with Suse's release number next. When Novell bought word perfect, the 6.0 release was terrible and everyone howled. But the 6.1 release was a thing of beauty. So I remain cautiously optimistic. Mandrake 9.2, 10.0 and now 10.1 are fine, I've not seen any problems there. SuSE 9.2 is I hope, a temporary aboration, it'd better be. The bean counters always demand on-budget and on time, the heck with the quality and full speed on the road to ruin.
We've moved several of our central servers to SuSe 9.2. And beyond a few run-of-the-mill problems it has proven to be a good quality solution.