El Taco Express #2 is one of the best Mexican food joints in NE. What they don't have as far as ambience, they more than make up for in delicious, fresh food, that can be had at a very reasonable price. Their burritos aren't the best, so try the 3 or 5-roll taco plate. Their fajita tacos are really good as well.
Pros: Great prices, friendly staff
Cons: not open on Sunday?, not the best burritos