Since you didn't mention how well your hearing, balance and other functions are doing on your AN side, I can only speak in general terms. And, of course, only you can make the decision which is right for you. But since you asked, here's my two cents:
Since no treatment can guarantee 100% that there will not be regrowth, I think your decision ultimately comes down to which type of treatment you're most comfortable and confident with. If it were me, I would ask your doctors what the risks are for regrowth, facial paralysis, hearing loss, balance issues, headaches and other complications, in percentage terms, for each type of treatment. Knowing this will help you gauge what quality of life you would likely have following each type of treatment. Choose whatever will give you the highest quality of life after treatment. Nothing else matters.