You can try Cherry Girls.
They've cut out a niche market for themselves by appealing to businessmen but be careful, though, some of the girls are on Cherry Girls and Adultwork and maintain two price structures, you can really get peeved off, it has happened to me, where you get a girl on Cherry Girls only to later find out that the exact same girl with the exact same services is on Adultwork at a lower price.
Basically, Adultwork is a monopoly and the other sites like Cherry Girls are far behind.