I first read about Vito's after they popped up on a list of "Best Pizza" options in Phoenix a few years ago. It seemed odd, as most places on this list were far more popular and well known, while Vito's is more of a hole-in-the-wall location that I'd imagine I'd probably overlook under most circumstances.
I haven't explored their entire menu, but I'm quite familiar with their deep dish pizza. In my opinion, it's far superior to what you'd get at the ever so popular Oregano's in terms of its flavor and quality. After recently experiencing Lou Malnati's and being greatly disappointed, I still feel that you'll find a much better product at Vito's.
Highly recommended!