For the most part I prefer long or just plain crazy hair.
I've always liked white/gray/silver/w.e as a color (it's really the same shading anyways!). They often are wise beyond their years, calm/cool/controlled, or somehow exceptional or insane.
I mean this guy's default form looks kinda girly, but nobody fucks with
this man. Not only is he wise, but he is extremely likely to abuse it to maximize the suffering of those that mess with him or his family.
Oh and this man is just incomprehensible to his peers. Wait, he has none.
And then there's Tomoyo with that crazy flowing hair. She's better than you and there's nothing you can do about it.
In any case, how did we go so far without mentioning the master of a thousand hairstyles herself, Fate Testarossa, anyways?
Really, like every new piece of art of her changes her hairstyle for some reason.