Top 10 Things I love and/or in an escort, in no particular order:
1. Natural breasts - size is unimportant. Any cup size from A or B to ???. Enhanced breasts are not a deal-breaker, however.
2. Decent conversation. You don't have to be able to discuss the historical inevitability of dialectical materialism with me (such a boring topic at this point anyway

but being able to talk about something is essential.
3. Smiles. A warm, sincere smile can be very sexy.
4. A cheeful attitude. Who wants to have sex with a gloomy puss?
5. A sense of humour. You don't need to tell jokes, but you need to know what a joke is when you've heard one.
6. A sense of playfulness. I know this is a little vague. Life is vague.
7. Eye contact during BJ. The key to good GFE for me.
8. Enjoy receiving pleasure as well as you give it. Another part of GFE, for me, is getting my SP off. I love feeling the way legs quiver after a really good orgasm.
9. A little bit of dirty talk - both me and the SP. Nothing too outrageous. Just an occasional, "fuck me harder, you bastard" or be willing to hear and respond to, "you love being my dirty little slut, don't you."
10. A non-rushed atmosphere. I know that time is always an element in any SP/client arrangement, but no one needs to hear, "You've only got 5 minutes left. Would you fucking cum already."