Mandriva 2010: Meh
Mandriva isn't as popular as it once was. There was a time when a Mandriva (then Mandrake) release was as important as the latest and greatest from Redhat or SuSE. Lately (at least in my little corner of the world) Mandriva has just been sort of a "Meh" distribution.
It's a shame, really, because when I first got started with Linux, Mandrake was far and above more polished and gave a much friendlier experience to the end user than any other distribution.
Will 2010 regain that excitement with me? Only an install will tell. I downloaded Mandriva One KDE edition, because traditionally Mandriva has been KDE-centric, and I still think that's where most of their polish work goes.