Checked this place out because it was on the Food Network's "You Gotta Eat Here".
Ordered a burrito and my wife got a quesidilla. The service wasn't too bad, and I didn't expect too much since we were there on Saturday night. It was pretty busy and there were lots of people in big crowds. One thing I didn't like was that the seating was quite snug, lots of tables and chairs fairly close together. I think this place is pretty good but I wouldn't go out of my way to come here. If you're in Newmarket this is a pretty good place to go, prices aren't bad, portions are large but there are lots of other options if you live anywhere closer to Toronto or even Richmond Hill/Markham area.
I would recommend this place if you're craving Mexican food and you're in Newmarket. If not, then it might not be worth the drive up.