At work we did a lot of our farewell lunches here at Aji Sai. The quality for the price is quick good, and I usually walked away feeling satisfied.
They don't handle large groups too well sometimes. One time we were under the impression they were cutting us off and we had hardly had any food. We ordered a lot of food, but we had 13 mouths to feed...
When it comes to all you can eat sushi this is my place in Toronto. I would recommend going for lunch though as it is cheaper then. :) Try the pan fried squid!