Lately I have been doing a fried egg on an English muffin with Swiss cheese, Turkey, Bacon bits and Balsamic mayonnaise. So good!! I also really like the BLT sandwich.
So many great choices. Corned beef or pastrami and kraut is always great, so is a bang mi, especially the BBQ pork ones and the pate ones. But my all time favorite is a street food I've only seen in Paris. Some spicy Moroccan merguez sausage, thin but doubled over, on a bun with mayo, some catsup style sauce and a bunch of fresh French fries stuffed right into the bun.
I pack a sandwich every day for work. I alternate between smoked turkey, with provolone and alfalfa sprouts. Otherwise I go with the higher-grade canned tuna with a pickles and mustard mixed in. Bomb. I usually get my lunch meat at Gartner's. Top quality, son.