Ai sushi in Somerville is as authentic as it gets in central NJ.

As for your last point, this is pulled right from their website:

>If you are into more run-of-the-mill Americanized sushi rolls like the quantity over quality of that of all-you-can-eat buffets, this might not be the place for you. For example, cooked rolls like tempura rolls, vegetable rolls, California rolls, Philadelphia rolls, for example.