Sweltering heat of the weekend and Yankees beating Boston got me thinking about hot dogs. Who has the best in town? NY Mag just reviewed 2 new places: Willies Dawgs in Park Slope and PDT in the east village. Other notables are Dogs on Park, Nathans in Coney Island, all the versions of Grey's Papaya and the Chicago Dog at the Shake Shack. So, Chowhounds, where to go in NYC for the best dog and why?