Finally found a great tasting slice in Tempe. Gus's, Slices, and all the other typical Tempe spots taste great after your fourth Long Island but when I want real slice of pizza for people who know what that means I go to Otto's. Perfectly located next to Cartel for homework, Casey Moore's for drinks and Ash Ave Comics for fun. I haven't tried anything but the slices and that's ok with me. Never had delivery or a whole pie either. If you're from a place where a good slice is important then you should try Otto's. Close enough to Mill that it's worth the walk and next door to Casey's if you just want to grab a slice for your beer.