Loco Burrito is one of the few burrito places that I've found in New York that live up to my California-raised burrito standards. It's a great quick alternative to fast food, since most of the dishes (burritos, tacos, nachos, enchiladas) are some combination of freshly prepared meats, simple rice and beans, cheese, fresh pico de gallo and/or fresh veggies and tortillas - a.k.a. not enough room for a lot of processed junk in there.
The menu includes some more interesting options like the jerk chicken burrito (yum!), as well as vegan alternatives like tofu cheese and sour cream.
The service has always been quick and good, as has delivery.
* Leticia, I don't know if they have gift certificates, but it's in the neighborhood and it quick and cheap!