This topic has caused a lot of controversy in the past!

I'd say firstly, trust credible sources eg wilisno etc,

Secondly, you should go in there realising that it's going to be a bit different to what you expect. Just accept that. Almost like if you read a novel, and then see a movie version, it's going to be similar but different.

Eg , a reviewer can say 'She's stunning ' - but when you get there, she's not to your taste.

Another thing is a reviewer can say he had an amazing time etc. but maybe he really hit it off with the girl and she got really into it. If you don't connect with the girl, you might not get the same level of service.

YMMV