Having recently traveled to Puerto Rico, my fiancee and I have been craving empanadas something fierce ever since we got back. We've tried a few places around town - from the East Valley to the West as well as North. We've experienced a good array of quality and variation. I would place Sydney's (with regard to their empanadas) as "fancy" as opposed to "traditional" (based on my limited experience).
I had an empanada and a Chipotle Chicken Club Sandwich. The sandwich was bonkers. The chicken was super tender and flavorful, and I enjoyed their sauce. I also ordered a desert empanada... oreo nutella... it was also insane. Loved it. Molly had a couple of empanadas - veggie and chicken, and a mango coconut dessert one. She was in heaven.
The staff was exceptionally nice, and the place was clean and well designed. It is the first one of its kind, but you can just tell they plan to make many more of them. It's a great concept, and if they keep service outstanding food like this, with top level service, they will make more.
This spot used to be the home of a nice little tea and sandwich joint which also had nice employees and good food. While I liked that place, I'm truly excited for this one, and it's definitely going to be a place I visit often and which I would recommend to friends from out of town.