Kroger's is the largest grocery chain in the US. They have stores like Albertson's in their chain as well as others. I can see how they've become the top grocery.
Kroger's offers customers a very clean store, fresh products, competitive prices, friendly staff, and great customer service. You can get one of the Kroger's discount cards to enable you to save on certain sales. It's a trade off like other shopping cards, they track your purchases but you get a discount on items at the stores. Kroger's also doubles coupons up to a .50¢ value. Their stores in Columbus carry super doubles where they double a $1 coupon, which is much better! I've never seen that happen in Dayton however.
Their produce and meat departments are wonderful and the store is clean and well stocked whenever I go there.