jamaica or gtfo! I had the worse lengua taco in Dallas its put me off the stuff for awhile. Pastor, asada and carnitas are all amazing. A sin as a brown man but carne guisada tacos (tex-mex) are one of my favorites.
There is this place called Tacos y Tortas Panza Feliz by my work. Best tacos in Houston! The variety is amazing tripa, lengua, chicharron, carnitas, becerro, al pastor, etc. They have these pollo en salsa verde tacos that are amazing and really underrated!
I had it at a Taco Los Primos when I was down to the states for work. Mind you, I'm from Ottawa (Canada), so I'm not used to having good Mexican food. On the menu, they advertised it was cow head. Not sure what parts. It definitely wasn't tongue. It could have been cheek. It resembled the meat from a Vietnamese stew I buy locally that has a lot of connective tissue.
I love the veggie option at the bottom lol. Between mushrooms, potatoes and onions, huitlacoche, flor de calabaza, avocado, etc. you're actually never hurt for vegetarian options from a decent tacos and quesadilla place.