I'm from Queens. But I find myself heading to Brooklyn more often lately. We were just at Roberta's, then the Taste Talks in Williamsburg, skating at House of Yes, and now the Brooklyn Brewery. I never thought I'd see the day.
Tacos in NYC are like pizza, in that everyone's favorite taco is the one they grew up with, the one they probably got just down the street from home. A little tip: it's authentic if you can find Guadalupe somewhere on the premises.