it's intended for different persons to like or feel with different characters. that's part of what makes deep anime characters after all. if there's just "the girl everyone likes", "the girl nobody likes" and "the others" then that's not really interesting character design^^
i don't really like Kawashima's attitude, although i do feel with her every now and then.
and i really like Kushieda, although she tends to overreact a little, both with negative and positive emotions.
regardless, they both are strong characters (and Taiga too btw).
hmm, i'll try if you tell me some details you'd like. it's way easier with a cute girl as avatar^^