I agree that too many of the hair styles look the same. I like to use hair that gives me the options if possible, of a fringe or not. Also, good morphs in a hair prop which allow you to really manipulate the style, to move the hair across in front of the eyes or to the side & out of the way.
My current fav is Yoanna hair as I really like this simple style, plus there's some useful morphs. Works well in Vue but takes an age to render.