My wife is 3rd generation NY Italian who grew up about a block from John's pizza in the village. We lived in Pittsburgh since about 1997. We eat pizza about once a week and we have tried out most pizza places in the city.
Stones is truly excellent. They make everything from scratch. When you see the fresh mozzarella being made each morning and taste it on the very very good Capri salad you know the chief cares.
The pizza is a perfect Neapolitan style pie of just the right size. It really is very close to the best pizza we have had in Naples Italy.
Stones is a gem.