Soldato
Looks like we disagree on the marbling...
http://www.ehow.com/how_8754_pick-steak.html
Use the U.S. Department of Agriculture's grades as a basic guide to quality. Prime beef has the most marbling, or fat within the meat, but is found mainly in restaurants, rarely in grocery stores. Choice, with good levels of marbling, is juicy and tender, and the most widely available. Select tends to be leaner and less flavorful, and dries out more easily.
The more marbling, or flecks of fat, the more flavorful the steak. Be sure that the marbling is evenly distributed.
http://www.ehow.com/how_8754_pick-steak.html