The highest grade you can buy, USDA Prime beef represents only 2% of all American beef. Described by the United States Department of Agriculture as “The ultimate in tenderness, juiciness and flavor”, it is a coveted designation that any beef seller would be proud to boast. However, because only a small portion of all US beef earns this grade, and demand for it is so high, many beef sellers are unable to offer it. More than likely, if it’s not labeled USDA Prime – it’s not. USDA Choice is the second highest grade assigned to beef that has slightly less marbling than USDA Prime.