Sushi Q is a sushi lunch takeout place in Commerce Court. The staff are super friendly and always welcome me when I arrive (they must recognize me due to my weekly visits). The food is fresh and they will custom make you an item if it is not in the cold case.
As I said I eat here at least once per week. The prices are not the cheapest for takeout (I think I could have the same meal at a sit-down place for the same price) but the fact you get soup, it is ultra-quick and the food is tasty and fresh makes it a good lunch option for those who work in the financial district.