Love's is like that too, they're huge. You can eat off the bathroom floors. That kind of approach brings in customers.
HEB grocery chain is a class act too. They are such a fine tuned machine they're driving other grocery chains out of business. One town I lived in had 4 grocers, nationwide like Albertsons, Krogers, etc. HEB came in with a couple of stores and drove them to their knees. The HEB branded items are tops, whether it's toilet paper, can of peas, their own smoked brisket, coffee...doesn't matter. It's priced low and is of the highest quality. Walmart sucks by comparison.
Another HUGE success story is a wine and liquor store, also family owned and operated - Spec's. Want a selection from 20,000 wines, cigars, cheeses from Norway and all over, cheap bottle of tequila or a $12,000 bottle of brandy behind locked secure doors for a friend - Spec's has it. Every month they are expanding somewhere. One cool thing is they protect and WILL NOT go into a small city that still has mom and pop liquor stores. They were there in those shoes at one time and protect their own kind.
http://www.specsonline.com/cgi-bin/showpage?pageid=main