I found that question very interesting and also spurred some thought process regarding performance in particular.  I know that I perform better for some than others......this has to do with chemistry.  I try to always deliver the best but I do fail sometimes.  I do take into considerantion my performance in other aspects as well.  For instance, the enormous amount of time I spend (and money on cell phone time), as well as many hours answering e-mails.  I started a thread a few days ago regarding life being better as an independant.  That meaning I meet alot more gentlemen that I am compatible with.  This has to do with the time I spend screening and trying to access if I should do this call or not do that call.  I know that often schedules do not jive, much of my business occurrs down the road a few weeks due to consistantly answering my phone and e-mail diligence.  Because of this I feel that I am pretty comfortable with most people I have met.  And therefore have earned nice ratings for the most part.  I also noticed that some periods of time have better marks than otheres, and that directly reflects how busy I am in my personal life, sometimes very stressful things going on, sometimes not.  My performance marks have definitely coincided with that factor.  I also rate my performance on being on time, also providing a discreet location if not the most expensive.  Then, my ability to make you comfortable and feel safe.  All of this before being cheerful and pretty upon your arrival.  For this and my actual "performance" I give myself a whopping 11-12!!!!  Smooches to all of you!