Like some others, I get annoyed in these threads when anybody suggests that someone might go high class in search of interesting conversation; unless you're looking for the latest gossip about the upper class (which I am so not), interesting conversation is not automatic at any level but can be found at any level. But a friend mentioned something interesting to me recently; she said that when she went over $300/hour, she ended up seeing a lot more guys who pressured her very hard trying to get BBFS. Perhaps guys figure that the "high class" girls are less likely to have diseases, so if they want BBFS they look for those. I don't know if any of these "high class" girls are willing to provide that (my friend wasn't, and perhaps that's why she decided to move her rates back down), but if they do, it would certainly explain why they get paid more. And would suggest that they should probably be avoided, of course.