There is no D' in Amatos..
That said, Amatos is great but Papa Ceo's is by far the best pizza in Toronto. The slices are absolutely gigantic and they are more generous with the toppings than Amatos is.
Pizza Pizza is fine for what it is - inexpensive, widely available, and not greasy at all. Mama's Pizza is also a good alternative that is widely available.
Pizza Nova, akin to Pizza Hut, is greasy and disgusting.