Well, I finally made it to Sushi Bune (downtown at 132 Bush, near Market). Overall, it was mediocre.
I only expected, at best, barely decent sushi, as kaiten sushi (sushi boat or conveyer belt sushi) is usually a budget sushi meal with commensurate quality.
I have had kaiten sushi in a number of places in Tokyo, and found it to be quite decent, but today's meal at Sushi Bune was barely acceptable:
Tako (octopus) - thin strips, slightly stale taste
Tobiko (eggs) - not bad, but the eggs were lacking that certain "snap" that I'd expect
Maguro (tuna) - OK, but thin slice and not much flavor. Texture was OK but tasted defrosted (which it probably was)
Unagi (eel) - mediocre, with little of the sauce, and again, not much flavor
Sake (salmon) - tasted day old
Salad roll - not sure what this is called, but it had glass noodles and a sesame flavor. Tasty and interesting, but no detectable fish in it.
Anyway, two of us had 7 or 8 plates of items and one hot tea, totaled about $20.
Next time I will take Melanie's advise and find the Happy Sushi truck, and go sit somewhere down by the Embarcadero...
.unless someone else has a BETTER idea for a decent, cheap, sushi lunch?