When I moved to Leesburg 10 years ago, I looked hard for a place that had NY style bagels and breakfast sandwiches. I found the answer in DeliSouth, it has the best breakfast sandwiches in Northern VA hands down, great NY style bagels with fried eggs and 2 slices of cheese. Once I was hooked on breakfast, I started going for lunch, my favorites are the Meatball Sub (the Bill Clinton), and the new Chicken Parm sandwich. The burgers are also great. Chris and his team are super friendly and know all the regular customers by name.
In an era of everything turning to corporate chains, its nice to see a family owned deli with great food thriving in leesburg.