Where I live in Southern California, Costco carries Foster Farms chickens, while Sam's Club carries Tyson chickens. The Foster Farms chickens are better. Costco's ribs are the best, especially the baby backs. They have pork butts if you ask for them, and they have brisket flats (the ones in the case have all the fat cut off, but if you ask the right guy they can get you a flat in the cryovac that still has the fat on it.) I haven't had much luck cooking just the flats, so I stick with packer briskets, usually either from Albertson's, Food 4 Less, or Smart & Final. Costco beef is Choice, while the other places have Select. The Latino market here (Vallarta) has good pork butts, not injected, and they're on sale a lot.