First, I would like to say that I am not AYCE kinda gal. I just don't eat that much (contrary to what my appearance may say) but in this case I think it was worth it. We went for lunch so it was a $21 price. But if you figure most of the rolls I liked cost about $10-$12 anyways, 2 rolls and you are there. Plus it's your choice of different things from the menu, not just sushi. But there are rules, and not EVERYTHING on the menu is part of the AYCE.
There is a bit of lag time on getting your food, so don't go running in thinking you are going to be out in 15 minutes. But do go with the expectation of enjoying the company you went with. Our server was great and the food was really good.