I like Kamai (excellent chawanmushi) and Azure (Azure hint: Sit at the bar, ignore all the weird rolls and eat the simple fish and rice. The chef there understands the rice/fish ratio and the correct texture and temperature for the rice).
Oishi at the bar is very nice, but the service is so slow. All the orders go in and out of a spot in the middle of the sushi bar. Hint, sit to the side unless you want people reaching past you constantly. I like to order my sushi a little at a time and quit when I am done, but this is hard to do at Oishi - you need to place your entire order at one time or you may never get it, since they are so busy they will forget about you. Maybe try very early or very late.
40 Tempura is very good, again the fish is treated correctly and cut at the right bias, and the sauces are kept to a minimum. Again, sit at the bar.