Just go here, select Boston, and work your way down:
http://www.theeroticreview.com/reviews/topProviders.asp
Here are the ladies on that list that I know:
I can personally recommend the hell out of Angel, who is number 9 on that list. She's *amazing* and she's like 6 months pregnant now so you'll have a novel experience.
Holly Bourne is number 11 on that list. She's a bit hard to get hold of, but she too will rock your world.
Vanessa Fontaine has been a crush of mine for years, number 14.
Number 25, Blair, is probably the most beautiful woman I have ever seen in my life, inside the hobby or out. She's also amazing in her service and a super chill person.
I'll also mention Tabie, who is number 26 in San Francisco, but works in Boston more often.
Number 31, Aubrey Hudson, was not my cup of tea. But she might be yours.
Number 32, Bianca La Bella, gets an honorable mention since I am going to see her this week or next.
Number 38, Paige Lynn, should be way higher up on that list because god damn she is a sex goddess. Also a super warm and giving person if that matters.
Number 49, Katie Koxx, is super sweet, and holy fuck is she good at her job.
Number 59, Karina, is sexy as hell. Kind of like Dolores Haze if you know what I mean