A few New World Producers comes to mind: Penfolds, Catena, or Ridge, for their broad lineups. But my final decision is d'Yquem, because the sugar level helps combat depression in a post-apocalyptic world, but that's just me.
Its all good to have your doomsday bunker stuffed with immortal red like Montrose or Latour, but how are you going to survive 10 years underground drinking that tannic beast everyday? Might be more fun to open the door and let the zombies in or the radiation kill you instead.
And lastly, NO BURGUNDY because you might need to make molotov cocktails out of the empty bottles; thus light-weight clarets will give you better grip, distance and accuracy.