I've been in 3 times now. Every time it's gotten better. I have the VIP card, so I usually stick to the happy hour tacos. The ground beef tacos are amazing. Great flavors with a nice crunch. The pork tacos are tasty too. Not a huge fan of the chicken street taco, a little bland. The salsa has changed for the worse, but really good salsa is hard to find. It tastes a little spaghetti-saucey.
I have to say the drink prices are unbeatable. $5 or less! I frequent Merc bar and have been hitting Fuego Tacos for dinner before I head there. The drinks are stronger and 1/2 the price of Merc drinks. Definitely stop in for a few before your evening out!
Fuego Tacos, you're on the right track! Can't wait to try some of the other tacos next time I'm in :)