That's an interesting question but as somebody who is very new to punting I would always go with an escort that had great reviews.
For example, while I was trying to choice the right girl for my first endeavour I added a girl that I really fancied from her photos to my favourites list even though she had no reviews. I was considering calling her for a quick chat when I suddenly noticed that she had her first review..........and it was a stinker! Apparently she refused to do anything on her favourites list, refused to get undressed and just gave her client a handjob :/
Obviously everybody has to start somewhere but with the economy the way it is I doubt many people have hundreds of Euro's lying around to waste on risky gambles while they have FAR better choices at their finger tips.
Just my 2cents