Dude! I work not too far from Balistreri's! I work on 76th and State in Tosa Village, which is technically Wauwatosa Ave.
Anyway, I went to Fujiyama, which is actually in Brookfield on Bluemound and Calhoun. There's a Fujiyama in 'Stallis, too. There's a really good sushi place on Prospect-just south of North Ave-on the East Side called, Izumi's.