I've been to Ah-So a few times now and it's always been a pleasant experience. Nothing out of the ordinary amazing but it's good. They have some great specials for lunch which I've taken advantage of twice now.
I've had sushi there twice now and until this last time, I wasn't overly impressed. I tried the lobster tempura roll and it was actually very delicious. It had a great crisp on the outside and the flavor sauce they used was amazing. I also had the egg roll appetizers which were also very good.
I would recommend a bit updating in the waiting area as the couches are quite a bit run down and a bit gross. Not something you really want to sit on.