Wawa is No. 1. Why it matters: The Media-based convenience store is expanding and setting the standard for personalized hoagies and breakfast sammies in new markets. Driving the news: Wawa came out on top of the American Customer Satisfaction Index's (ACSI) recent Convenience Store study.

Some stores fared better than others based on region, results show. For example, Wawa did well among customers in the South and Northeast, but QuikTrip was the superior convenience store in the Midwest. Circle K and 7-Eleven reigned out West, tying at 72 out of 100 points, data shows.

The popular Philadelphia chain topped the American Consumer Satisfaction Index's first ever convenience store study, which ranked Americans' favorite spots to refill their gas tanks and their stomachs.