Thanks for posting on the forums!
I commend you for doing a lot of reading. That is SO important while making a decision. I would also recommend you watching some of the ANA videos, especially on radiosurgery (CyberKnife or Gamma Knife). I think you will see that there are specialists who specialize in CK or GK. And there are many surgeons who do both and recommend both. But there are some, as you have experienced, who primarily do surgery or radiosurgery and recommend whatever they do.
But you are correct: a doctor's experience is critical! That's why we should never go to the closest doctor who claims to treat acoustic neuromas without first checking on how much experience they have. Some people like to tell horror stories of a certain approach when the truth is that their doctor did not have much experience with that procedure. If the neurosurgeon mainly does surgery, he/she may not be skilled in CK or GK. And then they might not do as well. That would be like someone asking you to play a brass instrument. You know how to read music and you understand music theory, but you might not be as skilled on that instrument as your own.
There are CyberKnife doctors who primarily do CyberKnife treatments, and the information they share can be very different from what you have heard so far. I would check out both opinions, if I were you. If you scan through the videos on the ANA website, you will learn of specialists who promote radiosurgery and who give a different perspective. They will do consults, and some of them may be free.
Best wishes on your research!