Took the plunge and tried Umi in belltown (old Bada Lounge space just S of Flying Fish). Really liked what they'd done with the decor (but then I admit Bada freaked me out on some level and I couldn't be there). Bamboo, dark wood, clean, modern.
The menu is huge, apps and salads and noodles and more on one page, then another page of nigiri sushi and rolls. Massive.
I started with two oyster shooters, nice plump oysters layered between a tomato salsa on the bottom and a mind-bending seven spice sorbet on the top. Not shootable, but very good, and only $2 each. Then some seared scallops with yuzu-ponzu-mustard sauce and fresh watercress. Monkfish liver was four slices of torchon in a pool of ponzu, topped with tobiko (? if I recall). Ankimo was mild, don't remember if it is always that mild. The nigiri sushi was beautifully presented, with nice little garnishes. They had a japanese makerel that was skin-on and delightful. Uni w/ quail egg was nice and fresh, and the hamachi was a nice thick silky three-bite piece.
My only complaint was the piece of toro I finished with was difficult to bite through. And, I felt the white boy behind the sushi bar could have done a better job of hiding the fact that he was snacking the whole time.
Unrestrained dinner for one with one nice glass of sake and tip came to $86. They have a happy hour menu that I will definitely be back for, and some wacky sounding rolls - strawberry, banana, and blueberry all appear in rolls. Service was good, prompt, polite, mostly young Japanese women. Worth checking out.