Coming from a Quaker background I tend not to use Miss, Master, Ms, Mrs, or Mr. I like to be called by my first name. I always address people in the fashion they wish to be addressed, starting more formally in introductions.

If I were to use a prefix I would use Ms. I have no hesitation in being, rightfully or wrongfully, associated with Militant Feminists. Without them my life and the lives of many who don't like them would be a hell of a lot worse. Think of that when you fill out your voter's registration and are wondering whether to use Miss, Ms, or Mrs.