I've worked downtown for 5 years now and I just had my first trip to Grand Central Market. What a fun place! I got a burrito that is the size of a small child that I will be eating for the next few days for lunch. So far, it's pretty good. I don't remember what stand it was from but it was towards the middle, not along the permimiter. I will be going back for sure, tons of interesting things to see, buy and taste there!