Philly's Best 30461 Avenida de Las Flores, Rancho Santa Margarita, CA92688 Philly's Best is located on Avenida De Las Flores. Philly's Best has authentic cheesesteaks and hoagies, as well as…More chicken sandwiches and burgers. Prices are low and service is fast. Philly's Best has been serving the area since 2003. Parking is located in front of the store.