I think I'll vote for Youmu, although that may seem like favoritism, her being one of my favorite characters and all. But similar to Lily, Yoshika is a bit nondescript to me (not as badly as Lily, though) and she is the only other one, I'd consider. Youmu has the whole "tries to be serious, but is actually pretty cute" thing going on. And then there is the dynamic with Yuyuko, who always reveals Youmu's cutest sides.
Yoshika, on the other hand, is pretty cute and a big eater. Well, and she looks also rather cute with Seiga, I guess. Not enough to make me vote for her, though.
Aside from looking cute, but not all that much so, I never saw anything moe in Satori. I can barely believe that she has so many votes already, while Yoshika has none.
Goliath Doll... Yeah, right. I'd rather pick Shanghai and I wouldn't even vote for that one.