Prime rib is a specific "cut" within a beef fore quarter.
That "cut" is also found in all the different "grades" of beef.
The higher the grade the more fat externally as well as the more marbling (fine streak of fat though the various "cuts"). The more marbling the more intense the flavor and the NATURAL tenderness.
Select is the leanest exterior and almost no marbling within a cut. Hence the least flavorful and is the cheapest.
Most markets sell choice which can vary a lot but is almost always better than select.
One needs to be careful when responding with joy when the is a cheaper than normal price per pound......read the label it is usually a lower than normal grade.
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