Went the other night for the first time with my girlfriend. Our appetizers were great; I had the spinach miso soup and we split a kimchee pancake. For the main course, she ordered chirashi and I got the "Sushi A" combo to test them out. Well, her chirashi was fabulous -- on the basis of it alone, Miyako deserves its reputation. But we had no trouble deciding that my sushi (which consisted of 7 nigiri -- 2 salmon, 2 tuna, 1 white tuna, 1 fluke, and then a california roll) must have been premade and sitting in the fridge for several hours before I'd ordered it. The rice was cold and dry such that it didn't taste remotely seasoned, and the fish, although decent, just did not have the ultra fresh and buttery taste that her chirishi had.
I don't think it's unreasonable to expect all the sushi to be made to order. The chirashi reminded me of the mind-blowing sushi I'd had at the fish market in Tokyo, but I'm sorry to say that my platter was not much better than the grocery store variety, perhaps even worse. Be warned.