This collection started as an online debate between Larbalestier and Black--which makes a better story? Zombies or unicorns? What impresses me is the fact that it actually went as far as publication. But I digress. 
 Before I even picked it up, I was convinced I'd be all for Team Unicorn. After all, unicorns have been with me since my upbringing. I've had little unicorn knick-knacks and the like. Besides, I'm not big on the whole zombie thing. It grosses me out. 
 So let's examine. Of the collection, my favorite stories were: 
 Bougainvillea (z); The Care & Feeding of your Baby Killer Unicorn (u); Inoculata (z); The Third Virgin (u); Prom Night (z). 
 Which means: Team Zombie wins. And really, when you look at it, the unicorn stories I really enjoyed were those in which they kill people. Figures. 
 The question isn't which is better. It's which makes better fiction. And, I'll admit, zombies do. There's not much you can do with a unicorn beyond it being mystical and magical. You have a plethora of options with zombies. 
 As far as the collection, I've already mentioned those stories I really enjoyed. The ones in the first half are a little cheesy, even the zombie ones. Though I've discovered some authors I simply must read more from (Carrie Ryan; Diana Peterfreund; and not to mention the co-editor, Justine Larbalestier), because my bookshelf really needs more YA and all (sarcasm? Maybe). 
 Team zombie for the win, I suppose.