i think that Koo is one of the best japanese/sushi restaurants in the city, especially for the money. i try to eat at the bar when i go, and just order off the daily special menu. the hokkaido scallop, grouper, and black cod are real standouts if they are stocked that day. koo also does a lot of traditional japanese dishes very well, their eggplant dengaku is excellent. the spoonfull of happiness is also one of my favorites there. i consider it a must if i am entertaining people from out of town. glad to hear you enjoyed your meal at koo.