Looks, menu, price, attitude. Not necessarily in that order - attitude counts for a lot. I typically prefer them a little older (30 and up), for a number of different reasons. I think women who are a little older are making a more informed decision about participating in this hobby, and tend to provide a better and more fulfilling experience. And I think that I have more in common with them. I suppose the 'process' looks like this:
1. See the ad.
2. Look at the pics. Am I attracted (I tend to have a wide field of what I consider attractive)?
3. Check the menu - does she provide GFE service? Any bonuses (CIM, Greek, etc.)?
4. Rates - do I find them reasonable?
5. Attitude - what does she say? Does she seem intelligent and fun? (BTW ladies - if you have a face pic, be smiling - I don't book with women who scowl.)
6. Is she easy to schedule? My own schedule makes it hard to schedule far in advance. This has prevented me from seeing a number of lovely ladies here, such as Angel and Allie Kat, that I'd have otherwise seen.