Dairyqueen -- That is a kaiten sushi restaurant -- with the conveyor belt. Very popular in Japan and they are often cheaper, too! I love them!
As for your question, it depends on how good the fish is that day! I love salmon, tuna, and yellowtail, but some days one is better than another.
Good toro is really good, too!!
My 5 C's of healthy living: Commitment to conscious control, with the understanding that choices have consequences