Got bored and my ogling long hair habit got the best of me so I ended up going in the movie mode and taking a pic of everyone's long tied up/back hair and I made three collage sets so that everyone who wanted to could decide who has the best tied hair. XD I may eventually do loose later if I can stomach Kasumi's abomination of loose hair...:
I excluded any side ponytails and braids from this, so Pai didn't make the cut, Gen Fu was also omitted and Honoka as well since she has mostly loose hair with a side pigtail. Since hardly anyone likes Ayane's pigtails, I excluded those also. If I had to say who had the best hair, it'd be Mai followed by Kasumi/Phase 4, Naotora, Marie Rose, Momiji appearance wise and Alpha 152. Worst is Hitomi(too short and blunt), Ryu(Generic and messy nape), Ayane(Wayyy too short and clips), and Helena.(Clips into her posterior).