This place is a great NY/East coast style Italian grocery store that offers a wide variety of pastas and sandwiches. I've been coming here since my ASU days and found Defalco's to be a good deal for the money and taste for sandwiches.
I almost always get the sausage sandwich or the baked penne as they have become staples of my visits there. Recently, I tried the pre-made pizza dough ($1.99) that only requires rolling out and baking. It takes a little effort, but the results were spectacular.
The only downfall is there can be a bit of a wait to get helped (which they now have signs up for this) and their actual groceries are quite pricey. There are some decent deals on anything that is pre-made, but the wine, pasta, sauces, and deli meats are pretty high on the price scale.
This place is a great place to grab a bite to eat, but don't buy too much of your groceries here unless you are looking for that true Italian ingredient to make your recipe exactly like in Italy or some rare item that can't be found anywhere else. Otherwise, it's definitely worth stopping in and at least looking around.