Sui Sui K has an amazing $11.95 all you can eat menu which includes many types of sushi, udon and other Japanese delights. However, their reguar menu is also an excellent value. The menu is pretty standard Japanese fare, but the fish is fresh and the pieces are large. Also, they are very willing to comply with requests, and I've found the owner to be very friendly. The waitresses are often (apparently) her young teenage daughters. Although the service could be better, I think the fact that the girls are very young excuses it. I was surprised to read that other customers thought they were rude--they've always been incredibly nice to me. I've been to most of the sushi places in Oakland. I'd say that this one of the top few, not even counting their all you can eat menu. Factor that in, and it's the best deal in Oakland.
Pros: inexpensive, friendly , good sushi!
Cons: parking isn't great