i've been to Umi for sushi several times and haven't been disappointed in the quality of the fish. yes, it's delicious and high quality food.. so why the four stars you ask?
because it's just a bit too pretentious for my taste. yes, it's great quality fish and yes, the decor is very traditionally beautiful japanese... but what you read about the snobbery is true... 50$pp minimum @ the sushi bar? please.
i agree with a previous reviewer, it's beautiful, high quality food and service... but i always leave feeling like something is missing.