Certain cuts, like brisket, stew meats or ground beef, are just as tasty in a select grade as in a higher grade; they tend to be fattier cuts anyway, and are nearly always cooked low-and-slow, ...

They're very uncommon in a grocery store setting, unless it's something like the canner grade beef appearing in pet food. They may also appear in frozen meals, canned soups, or ground beef mixes.