I like this place a lot.  While the service isn't always spot-on, I have never had rude or unfriendly service here.  They get the job done, and generally quite quickly.  The atmoshere is a little bare-bones as well but pleasant, especially the patio.  The tortillas are my favortite part, nothing short of delicious.  I also love the liquidas (pineapple is awesome) and fresh squeezed juice.  The bad side?  Despite the rating, the prices don't match the bare-bones experience.  Breakfast for two can go upwards of $20 if you go for just a few extras (which is a must due to small portion size)...
Pros:  mmmm tortillas, pleasant atmosphere, quick service
Cons:  too expensive, sometimes overcrowded
                        
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