went to ISO but the 45 minute wait spurned us to look elsewhere... found this really cute place on 11st between 1st and 2nd ave called Krazy Sushi - don't know the exact address but i remeber it was on the south side of the street closer to 1st ave. it's a tiny restaurant with only 4 tables and a 3 seat sushi bar. the sushi was surprisingly very fresh albeit the variety was limited. the white tuna and the yellowtail were especially good. the spicy tuna and the philadelphia roll were very good too. best part was 2 of us stuffed ourselves with 8 pieces of sushi, 3 rolls, and 2 appetizers and the bill was only $30.
don't go with sky high expectation cus this place isn't yasuda. however i think it's a notch above most of the east village sushi places and a whole lot cheaper too. enjoy!