Hi SunnyDaze, and welcome to the ANA Forums! Thank you for posting.
I live a couple of hours away from Vanderbilt, and I continue to hear great things about their acoustic neuroma treatment there. However, I have also heard good reports from UPMC and Allegheny Health in Pittsburgh.
But there are a couple of options for you to consider. First, the ANA offers support groups where you can chat with people who live in Nashville or Pittsburgh and have firsthand experience with the treatment centers and doctors in those cities -- although I am not sure that the support group in Pittsburgh is still functioning. Being able to speak to a live person is a great option. I haven't checked, but there might even be peer mentors in both cities. You can look for peer mentors on the ANA website.
Another option is to search these forums. The way to do this is to go to the Home site of the forums by clicking on the Home button on the upper left corner of this page (what you do next will not work on the page you are currently on). The in the search field on the right side type in what you want to search for (like "Vanderbilt", "UPMC", "Allegheny" or a specific doctor's name. And then hit your <Enter> key on your keyboard. It will then retrieve every time on these forums that "Vanderbilt" (or whatever you searched for) is mentioned. Sometimes this can be helpful to see what others on the forums have shared about "UPMC" and their experiences there.
I wish you the best as you search for helpful information and I wish you the best on your acoustic neuroma journey!
Don