I was a bit skeptical when I purchased a Kobe brisket from Rosenblatt, but it was really nicely marbled and cooked up beautifully. Cuts like butter (margarine?) and is pretty delicious. Don't know if it's a placebo effect or what but I was very impressed and will purchase again. (In Chicago Hungarian Kosher carries the whole briskets, which are a good weight and have an appropriate amount of fat left on it - nothing worse than overtrimmed brisket).