Quick update to say this place still rocks! Great, authentic Mexican with a varied menu. We paid another visit this past Friday night and as we sat looking at every table and booth full and people waiting at the door we just smiled. Knowing that this kind of support (and they are busy pretty much any day/time) means that this little nugget of joy will remain just down the street.
La Unica is a great example of what good food and service, done consistently, can do even in a ho-hum, strip mall location. Word gets around!