I actually really like Subway.
Sure, it's a fast food chain, but I really do like what they do. I like the fresh bread that they bake right on site, so it always smells great here. They have about 6 choices - my favourite is parmesan oregano. I also like the variety of toppings that are virtually unlimited, and the sub sauce. I actually learned that they don't have the sub sauce in the US (not in NYC anyways), so Canadians - enjoy what you have!
Last of all, with any fast food place, I like the speed and service I get. Long lines tend to move quickly - they've really got the assembly line down. And the price - i don't think you can get a cheaper lunch, especially in the Finance District, at $5 for foot long and $2.99 for a 6 inch. I have spent many a lunch and dinner when working late here, and have enjoyed every one!