I grew up in Chicago and Lou's was our goto place for pizza. For years we internet ordered frozen pizzas from them to "get our fix" locally. We were never so happy as to when Lou's opened up in Phoenix and their food here is as good as it was in Chicago.
They are busy during peak hours but an early or late meal and you can walk right in. For my birthday we ordered 5 pizzas to go and they were hot and ready at the prescribed time.
Their sausage pizza is my absolute favorite followed by the cheese pizza. It is a slice of home and it makes both me and my stomach very happy!