Superior Grocers, founded in Covina, California in 1981, has grown to over 47 stores across Southern California by focusing on community support and quality service. Customers appreciate the friendly and helpful staff, with many highlighting employees like Mrs. Teresa, Liliana, and Nelly Nuñez for their excellent assistance and kindness. The store offers a good selection of groceries and maintains a fairly clean environment. Self-checkout options are available and have become faster, though some customers wish the store would open both entrance doors for easier access. Parking is considered better compared to other locations. Overall, shoppers enjoy the great customer service, helpful staff, and convenient shopping experience at Superior Grocers.