I like Ciel the best because she is a very nice senpai. She helps Shiki out a bunch, I wish I had a nice senpai to help me out.
Ciel likes to eat a lot, which I can really relate to!
She's also an undying homunclus that fights for the catholic church, hell bent on destroying a reincarnating vamprie. (epic)
If the people at church were like Ciel, I wouldn't hate going as much. XD
This is a Neco version of Arcueid, they're little troublemakers!