If you don't mind standing in line for a few minutes, you can't beat the Taqueria del Sol for great tacos that don't break the budget.  It is a great place to take the family and if you go early, the lines moves quickly.  These aren't your usual tacos, but delicious with a few specials everyday.  The kids ate two apiece and even finished off a cup of charro beans (and these kids never eat beans at home).  Kid friendly, a little loud, informal and fun.  And for mom & dad, the margaritas are also great.