Oh darn. This is... really hard.
I mean, Romantic Children is great. But then, Alice in Wonderland is even better. Doll of Misery and Grimoire of Alice are awesome too. Note how 3 of these are Alice-related, and the other one even has the word "Doll".
I can't pick between them... its different kinds of music, I can't rate them against each other. They have different styles and emotions about them, they're all wonderful in their own manner.