It is one of the country's favorite homemade fast foods. Jason Sobocinski makes it at home too, and on his Cheese Truck in New Haven, Conn. But a revolution in grilled cheese sandwiches is sweeping the nation and Jason wants to be at the cutting edge. In Wisconsin he tries a classic Swiss-Alpine; in California there is more of a contemporary twist with seafood, Naan bread and Fromage Frais. But which does Jason think is best?