I know Shiro's has already enough glowing reviews around here, but I went again (it is next door) last night ans had a wonderful omakase experience with the lady. We started with the Belltown poke, then natu salad (miso sauce with salmon, cucumbers, tuna, etc), then a porcini muchroom broth that was steamed in a tiny tea pot that had exquisite subtle mushroomo flavor (the broth, not the teapot :)).
Next came melt-in-your mouth albacore nigiri, followed by maguro nigiri, followed by a piece of salmon nigiri and mackarel nigiri with a light ginger sauce and pickled onion slice (no soy), followed by a piece of squid nigiri with real wasabi (a customer had brought in a root), followed by a piece of abalone nigiri and scallop nigiri with sea salt (no soy). Next, but not last was two pieces of hamachi and finally a fried "dessert" sushi.
Everything was delicious and it forever ingrained in my head that you can only so Shiro's at the bar. We even had a nice couple conversations with Shiro-san. Sitting at a table is always disappointing for me and I've decided after last night to never do it again.