Here, we have HEB, Wal-Mart, Arteli (a local store), and other mexican supermarkets like Chedraui and Soriana.
I go with my mom when she goes buying groceries, and she prefers buying in Soriana because they give you a card for collecting points for buying there in order to get some free items when you get a certain amount of points.
I go to Walmart when I need cheap videogames 