Originally Posted by slvoid
Welcome!
I ride a road bike with 700x25 tires to work every day and it's been holding up fine so far over pretty much everything i've thrown at it. If I were you, I'd take a long hard look at either a road bike or a flat bar road bike. It would be much much lighter, faster, and you won't have to work as hard.
^^^ good advice!
Welcome, indeed! NYC's a great place to ride, despite our occasional complaints.