Finally tried this place out after living near it for almost a year and only finding out about it a couple weeks ago during a Mexican food craving we were having. So far it's the most authentic Mexican I've had in Toronto. Just go in with a friend, order the "Mexitaco" dish and you will have 12 delicious tacos to try - 3 of each of the 4 main varieties. They serve it up with guacamole and real tortilla chips made from the same tortillas you eat the tacos in (a sign of a proper Mexican place) and have a well stocked menu with all the standards you should expect.
We ordered the jalopeno poppers and the Mexitaco. My mouth was on fire but my heart was aflame for this place. The Mexitaco is $24.99 which works out to $2.08 per taco. Factor in the included guacamole, chips, salsas (verde and regular), the spicy onions and the limes and you should see the real value of that deal for some real tasting Mexican.
The only drawback of the place is the TVs showing Telemundo all the time but I'm no priss. The food was good so I didn't care and in Mexico many tequila/taco joints have the exact same ambiance.
If you're a fine dining snob, don't bother eating in (they do cater though). If you just want to have real Mexican in one of the handful of places in Toronto that has then go here, eat well and shut up.