I stayed local for my surgery and I've never regretted it. In addition, my outcome was very good - only lasting effect is SSD (single-sided deafness).
There are those who traveled and it was right for them, but it's not right for everyone and it wouldn't have been right for me.
Do not let anyone make you feel that you must travel for treatment - or that you must go to one of the "big" names (like HEI). Nothing personal against HEI, but it's not the be all and end all that some would like you to believe. Their patients have good outcomes and bad outcomes - just like patients of every other AN facility out there.
As Tim mentioned, and the ANA affirms, one of the main objectives in AN treatment is finding a doctor who is qualified and experienced to treat ANs.
I agree wholeheartedly with Skip; you must feel comfortable with your choice of treatment, doctors, and locations. Follow your head and follow your gut instinct.