Two weeks ago I was in Sams Club, and I looked and their brisket flats (my Sam's doesn't carry packers) were all Certified Angus Beef, so I picked up one. So far, it's the best brisket I've done to date! Last week I checked again but they were all USDA choice. I guess you have to keep an eye out for CAB briskets. I don't know where to get CAB packers in western PA. Can anyone help me out here?