Concerning the stars as for me it corresponds always to my judgement of the service level and not the "wiederholungsgefahr". I am likely to come back to a 3 stars girl as well as i can not repeat with a five stars girl. It depends on many things including those i mentionned in my review here. If a girl gives me exchange, authenticity and vibrations but weaker technically with a less complete service i will more come back than for a girl with "all inclusive" service and super technic but impersonal and not providing any emotions.