Toss up between The Champ (#7) at the Atlantic Deli, Freeport - Turkey, American cheese, Bacon, Lettuce and Tomato with Russian dressing on a hero.
Or
Chicken cutlet club at Green Valley Gourmet Market, Briarwood - Cutlets, Bacon, Lettuce and tomato, Russian also on a hero
The Ruben (pastrami) at both of these places is also excellent.