I never heard of Big Star, but I forgot all about A&P! Of course, we went there, too. Publix was the only one I liked, though the Winn-Dixie was the closest to us. Wait, the really closest one to us was a neighborhood IGA. It was just a couple of blocks from my home.
In a perfect example of the big fish eating the little fish, eventually some Big Stars actually ended up as Publix stores.....what a trip. SMH
https://en.m.wikipedia.org/wiki/Big_Star_Markets