O.P. On a serious note...
Would you rather a Zombie Apocolypse or an Alien invasion?
Now, Zombie Apocolypse, I'm thinking like the fast kind of Zombies, not Walking Dead style, more 28 weeks later. As for the alien invasion, I'm thinking, War of the Worlds/Independence Day style.
However, with the Apocolypse there is no as of yet cure, and Invasion, we don't have a way for defeat yet.
And when your heart begins to bleed, your dead
and dead and dead indeed.