coal brick oven style - Grimaldi's
NY Style - Ray's on Prince Street
Sicilian - L&B Spumoni Gardens
If anyone visits NY, I wouldn't go to Grimaldi's or Lombardi's for a NY style. They are among the best I've ever had but it's different from the giant, foldable slice. A lot of people will make the coal oven slices a fork and knife job, especially if you are eating at the restaurant.