Can you recommend best taco places in Austin?

Guero's on S Congress offers great breakfast tacos with reasonable prices and diverse choices. Taco 620 can be hard to spot as it is a food truck located at the corner of FM 620 and FM 2222. But you can’t miss its delicious breakfast tacos. It offers only the classics: egg & potato and egg & cheese. The tacos are fresh, soft and tasty. For more formal choices for lunch or dinner, Cuantos on 12th St and Suerte on 6th St are Mexican restaurants with great seating area and lovely vibes for dating or friends/family gatherings.