I always like Mad Mex. It's not authentic tacos at all, but the food is pretty good and really large portions.
I usually get one of their margaritas. While they do have the big frozen ones that I think they're known for, I usually go for one of the others on the menu. I like the Ruby Red grapefruit one, but recently tried a seasonal cranberry sage margarita that was delicious.
If you join their mailing list, you can get coupons and I frequently go then. It's fun to split a burrito and their waffle fries. The waffle fries with queso and ranch are really good. There are also good wings and this location has seitan wings, which I've never gotten, but have heard are delicious.
This location gets pretty busy, especially during happy hour times, but the wait usually isn't too bad and service is fairly quick even when it is packed. It does get really loud though, so be aware of that. I love the decorations here. It's really big and airy and just a great location. Much better than the tiny one in Oakland.