Las Vegas
Some Vegas suggestions, but like the previous posts, the donation is quite a bit higher:
Nikki Avalon--she was written up in Playboy, reasonable rate but she is very busy
Jessika James -- very expensive
Jenny Syn -- tall, solidly built and very open minded but no backdoor play
Gina xoxo -- well reviewed
If you go to theeroticreview.com, you can do a limited search on qualities like height, build, hair color. If you pay for a membership, you'll know more or less exactly what to expect. For nonmembership you can also search on the names above or any derivation and get a non-juicy review. Membership gets you the juicy details.
If you want a selection of independents, search for Las Vegas Delight.
IMO, stay away from agencies, they tend to be bait and switch and their opening rate is outrageous. Also stay away from the house girls, the nightmare story is if you try and pick them up at the casino bar, they know you're easy prey and these are the girls that are typically the biggest rip and might even try to steal from you.