Check these places out, yet beware of any "community" dipping area. We visited this place, and saw customers sticking their nose-pickin' fingers into the condiments and sauces! Then, the help comes along and does a refill--and dumps the old sauce in with the refill. Not good.
Best Tacos Denver 2008 - Tacos y Salsas
The neighborhood is kinda iffy. But the tacos are incredible. The only thing about the food that is kinda disappointing is that there are no salsas that aren't burning hot. Which is good for me, but sometimes I just want something not super hot.
The food is fantastic and the atmosphere is great. The tacos are hard to beat, but the smothered barbacoa burrito is pretty good.