I still stand firmly behind NYPD, but there's definitely a new contender in Sal's Brooklyn Pizza Bar (in the unfortunately named O-Town West, midway between Universal and Disney if you take back roads). Amazing NY-style pies coming out of a wood-fired oven. You can get a full pizza, as well as some subs, but the emphasis is on pizza by the slice, and they have like a dozen options ready to go, from the traditional to the weird. If you have a car at either resort, worth a visit; would also pair nicely with a trip to Target or the Outlet Mall, both nearby.