Obviously a great sandwich has to start with bread bread. Manhattan Bread & Bagel bakes their own bread and bagels and their quality is reflected by their popularity. From early morning to mid afternoon, there is a steady stream of people dropping into pick up bagels, muffins, etc. in the morning.
For lunch MBB has delicious sandwiches. They have approximately 14 different sandwiches available on breads such as ciabatta, whole grain wheat, sour dough, baguette filled with quality meat or veggies (they have 2 different veggie sandwiches). I think what makes them unique is the fact that they also offer a good variety of cheese (e.g., gruyere, havarti, provolone, goat, etc.) and the combination of flavors makes a wonderful taste sensation.
They also offer premade salads to go in case you're in a hurry and can pack lunches to go in the event that you want to picnic outdoors.