Sushi 86, in my opinion, serves some of the best quality fish that I've eaten in Cleveland. Think of this place as an extremely casual sushi bar. But don't make assumptions about the quality of what you're getting just because the restaurant is inside a mall. What you get is pretty good.
Service is pretty good and both the people who bring out your orders and the people who roll the sushi are extremely friendly. They don't have as many unique rolls as other restaurants, but the rice is done right and the rolls are a good size - not really large but also not skimpy at all. I liked the 86 roll, which has yellowtail, tuna, vegetables, and tamago inside it. You get a good variety of fish if you order the chirashi, which is just the fish on top of a bed of rice.
Another bonus is that they cater sushi platters.