We just finished our walking food tour with Dante. He is GREAT! The food places were interesting, he was extremely knowledgeable as well as friendly. He didn't rush us and really engaged everyone, even my super picky teenage boy. We went to Katz Deli, Russ & Daughters, Economy Candy, Vanessa Dumplings, Pickle Guys, Kossars, and Donut Plant.
Definitely don't eat anything before you come to the tour, you will be stuffed by the end.
I would recommend Dante to anyone interested in food and visiting NYC.