Rosa Mexicano is pretty good at the higher end. Not amazing, but good.

In the more fusion-y (and more reasonably priced) sphere, I really like Hell's Kitchen, although I haven't been in a few years.

For very tasty, reasonably authentic delivery to my apartment: El Maguey Y La Tuna

For cheap "real" tacos: Tehuitzingo

For "burritos" that aren't really Mexican in anything but name (but have some healthier choices available and still taste good): tie between Burrito Box and Benny's/Harry's