I really wish I had tried Yellowfin before my last week in Champaign. It looks a pretty sketch from the outside, but on the inside it's really nice looking, though small. We ordered 3 rolls to share between the 2 of us, and it was a little too much food-- but, we were also sent multiple items from the chef, white and red tuna, and then a tempura fried banana for dessert.
Some of the rolls were a little bit loose, but it didn't bother me. The fish was absolutely delicious. They have rolls for both new sushi eaters (my companion) and more adventurous ones (myself). Overall I think it's a great little place and will be going back when I'm in town.