I have been to about 4-5 pinsaros in Tokyo, many times in each. And YMMV at all of them. Had my best experience at JanJan long time back, but most of the time, I get a friendly 50 something woman who just do her job properly, as you would expect in Japan. Service is always good at JanJan. Not the same can be said at Hinomaru, where I had excellent sessions with relatively young and attractive girls, and also my worst experience, where the woman was not only unattractive, but very reluctant to give the expected service. And yes, I would avoid Dio and/or Emotion, where they specialist in older women, unless it is your thing.
At the end, if I spend 3000, I do not expect more than what I am getting. When I want more, I pay more, and there are all sorts of options, as everyone knows on this site.