Really does depend on what you are looking for.
For a reliable provider I might suggest Alex Lynn:
http://usaadultclassifieds.nl/classi...3343&cityid=98
She is not a 20-something hardbody, but she is in shape, petite and really knows what she is doing.
For an AMP type thing, Shangri La spa seems to be the top of the heap these days. It'll cost you a total of about $240 for an hour session, but reliably hot and fun.
If you are looking for a top-end provider, I would suggest Sofia from this board:
https://www.eccie.net/providers.php?do=view&id=154858
Haven't yet had the pleasure myself, but from all reports she is amazing!
There are others outside of these, but without more detailed information, it is tough to know what you like. Good luck. Have fun!