First off, I feel sorry for any sushi place that I visit when I was craving Goyemon but it was a 45 min wait and we had to catch a movie after grub. Sushi 21 was just down Decatur and had a 4 star rating on here so we decided to try it.
This place is pretty good. The appetizers and rolls with AYCE are amongst the better places in town. The server we had was back very frequently to check on us and the sushi chefs were engaging. One of them even made me a half roll at the end of our meal even though they don't usually allow it when doing AYCE.
The only complaint that I had is when I ordered my first round of yellowtail, super white tuna, tuna, salmon, and unagi. It came out and looked very fresh but it smelled as if it were treated with something to preserve the fish. There was a slight taste of vinegar or something as well. I couldn't really place it. But the cuts were very generous and once past the "treated smell / taste" it had a good taste. I base my sushi experience pretty solely on the freshness / taste of the nigiri / sashimi so they're gonna take a hit on this one.
Overall, a nice substitute for my fave sushi place in town when I was on a tight time schedule. Not a place I'd visit again unless the same circumstances arise with better places close by.