Allen Brothers is a very good company with great products. We buy ground beef and some "secondary" products from them to offset the freight to Florida but these people are some of the best at what they do.
I can tell the difference between different grades of meat depending on how it was prepared and cooked. Some cuts of meat are more difficult than others to notice a difference but the prime center cut denuded sirloins, the New Yorks, and the Ribeyes are at the top of the foodchain.
They also sell Wagyu in different cuts, my favorite being The Wagyu Flat Iron steak. Seared med. rare with a touch of Plugra butter, WOW!