You're probably looking more for current recommendations, but this might be interesting topic if left open to all providers, past and/or present. Let's see...
My top five favs of all time (in order):
1) Amber (an SF streetwalker circa 97-98, retired)
2) Judy (Sun Spa, circa 98 or 99, can't remember now)
3) Jeannie (Sun Spa, disappeared in Feb. 2001)
4) Why, it's a tie! Malaysia (MSC stripper, retired), and Angeli (stripper, pre boob-job MSC edition, currently at Crazyhorse)
5) May (Mai's, disappeared probably around 95)
Nobody current. The judging for applicants to the top five list is, of course, extremely stringent. Hell, I can't just give those positions away.