BB isn't my favorite, although I do like the patterns on her dress. I've leveled her somewhat but that's on hold now due to have acquired rainbows that I think have more useful abilities and that I like the art for better (Acacia in particular), and they directly compete for manyu/dragon resources. I wouldn't vote for either of them personally; I'm not voting for the girl I like the best, I'm voting for the girl I want the chance to pull with FGs in a gacha (i.e. ones I like but don't own).