Which is better?

Konichiwa mina!

Long time no post! (Actually I dont post that much). I am here to ask everyone a simple question:

In Sword Art Online, which is the most beautiful girl among the choices:

~Asuna Yuuki
~Kirigaya Suguha/Lyfa
~Rika Shinozaki/Lizbeth
~Ayano Keiko/Silica

Okay~~! For those who knows these people please give me your opinions! I'm looking forward over your choices! Then, see'ya! ^U^