Yuka is such a fithy place I don't know how it hasn't been closd down by the board of heath! Just take a peek t kitchen next time to go tere-it's just ext to bathroom-disgusting!!! You truly get what yo pay for.
For all-you-can-eat sushi, Chinatown East is a much better option on the UES than Yuka. Significantly cleaner, and for an extra $5/person you get much better nigiri & rolls. They also include special rolls on their all-you-can-eat menu, if you're into that kind of thing.