Hands down Cali Grill....Yoshi the sushi Master that is the head of the area is amazing and so is the sushi......We have eaten sushi at a number of WDW resorts and Cali Grill is the top of the list....In July my husband and son(14) shared 3 sushi platters (Spicy Sensation - Scallops, Tuna, Avocado, Tobiko, and Fireball Sauce) for apps and then split another one and a filet for entree.
The rest of us 3 people were allowed to have one maybe 2 pieces but that was about it....