Tri-stat got my vote because Ex Machina alone looks just that good. Oh so good kinda good. THAT good.
I'd love to play me some old-school WoD Werewolf, though the new-school is looking interesting - too bad I don't like some of the design choices in the new WoD, like the "feat"-like merits, and having soak, armor, dodging, and parrying all combine to help make what's now an essentially hit-or-miss combat system. No more will the dice help you describe the action.
Exalted is fun stuff, too. And I'm really interested in trying Alternaty and Savage Worlds, if I ever get the chance. And the design notes for Ars Magica 5th make me soooooo happy...