I love Bellacino's Pizza AND Grinders!! They're pizza is cut into fun (though messy) squares and is very good. The grinders are great too, especially for big groups. The downside is that the service can be rather slow when they're busy -- so try to come in on a weeknight or for lunch. I think you can even call ahead.
Pros: GREAT food, delivery!
Cons: somtimes slow service, can be loud
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