Compared to La Tienda Los Gemelos, and even Laredo's, this just doesn't stack up. The meat tends to be somewhat watered down, with flavors that didn't have all that much impact. If you're looking for al pastor you won't find it here, it's much more frill than substance.
The cook also asked me if I had been there before, and he arrogantly said "Oh you'll be back." Well sorry Lupe's, but I haven't returned.
EDIT:
I still have not been back, as Gloria's has opened up on Junction Rd. If you enjoy good tacos, then there are much better options in town.