Hi - I grew up in Cleveland but now live in Texas. Lots of family up there still.
Sorry to hear your AN is growing. Choosing treatment is very personal - factors include age, health status, support system, health insurance, etc.
Cleveland has great doctors - you may want to investigate Cleveland Clinic too. You may want to search the full Discussion forum for "Cleveland" using the Search feature (hint: go to the main discussion home page first.) Also nearby in Pittsburg at UPMC is the go-to guy for Gamma Knife radiation (Dr. Lunsford). If you go for surgery, you need to ask many questions to make sure the docs have a lot experience with removing ANs.
There are lots of people who share stories of great outcomes with either surgery or radiation; there are also stories with surgery or radiation where it was a hard recovery / various issues to deal with. So no simple answer there.
Warning: I think the message boards and AN Facebook pages show a disproportionate amount of information on harder outcomes and challenges, because people are looking for support, solutions, etc. People with good outcomes usually spend less time at these sites once they are recovered. I feel guilty when I talk about my good outcome, because I don't want to "rub it in" on people having a hard time - but at the same time I want to give my "data point" to the pre-op people who are deciding what to do.
I had surgery about 8 weeks ago - I had/have no pain, gained back my strength quickly, was walking a ton before I went back to work. I can tell my balance is not 100%, I just have to be a little more aware of how I am moving, but it does not slow me down, and it should continue to improve. I did lose one side hearing, but my other ear is very good and I am open to also trying a BAHA device. For my surgery, I chose to go to the Keck Hospital team in LA (Drs. Friedman and Giannotta), they and their team were fantastic.