Saw this thread and couldn't resist not posting :)
I consider myself being somewhat a fan of them, even though I have many bad things to say about the group or about the members too (well, it's not exactly bad as such, it's more like picking on them for what I don't like). So it's almost a tsundere relationship or something like that :D
My absolute favorite is Sooyoung and Yoona is just half a step behind her. So yeah, introductory rambling done :)