My favorite is Panera Bread. I love the Fuji apple chicken salad, chicken wild rice soup, and their turkey cranberry flatbread when it's available. I also like Panda Express and Potbelly, but I live to far from either to enjoy them regularly.
Panera's tasty, but their menu is just too expensive for my blood . It's like $7 for a very small panini (although, they taste pretty good). I do buy their cheese breads regularly.