If you're in for sushi that is not super high dollar or pretentious, go to Rusan's. The rolls are affordable (as opposed to other sushi restaurants that can charge up to $22 for a roll!!) and delicious. The sushi tastes fresh is of decent portions and some of the rolls are really fun. My favorite is the Rising Sun Maki. If you're new to sushi you can start out with maki rolls that include chicken or just try tempura fried items or salads.
The service here is usually good but every now and then it will be pretty busy and will have you waiting a little bit longer than you would like. They also offer a lunch buffet but I've only been to it twice. There is something about eating sushi off a buffet that doesn't sit well with me. I would much rather go for dinner and order my rolls to order ensuring the most freshness.
If you're down for a relaxed atmosphere with a tasty, affordable sushi selection, Rusan's is your best bet in the CLT.