Chika > Miu = Matsuri > Ana
Chika-chan is the perfect loli waifu--cute, great sense of humor, and can cook.
Miu-chan is cute, but is likely either to blackmail you with the threat of the party van, or do it just for the lulz.
Matsuri-chan is cute but too weak and unassertive. I'm no moralfag, but I'd actually feel too guilty to stick it in her.
Ana-chan is boring. Search your feelings, you know it to be true.