Real talk. The new Mess Hall at The Flight (technically in Tustin, but on the boarder) near the District has the most amazing taco and burrito place. Fonda Moderna. Amazing fish tacos. Incredible vegan and vegetarian options. A super popular taco flight. They make their own tortillas daily. Amazing place. I eat there twice a week.
Lately I’ve been going to Fonda Taqueria at the Flight Mess hall or Taco Mesita. Both are Tustin but nearby. And both are more hipster street tacos but very good.
Fonda Moderna in Tustin! (There's free validation in a koisk inside the building. Or if you dont want to mess with that, just park on the sidestreets and walk) It's a modest food hall with many vendors so there's something for everyone.