Before moving here in 2011, in the Baltimore suburbs I had a BJ's one mile away, a Costco eight miles away and a Sams Club ten miles away. After browsing through each store, I really didn't see a whole lot of difference. So of course I joined the one a mile away, BJ's.
I belong to Sams here, but only go maybe once a month at most. That's just for one item, a pound of lump crab meat for $20, nobody else here stocks it and my wife can make Maryland Crab Cakes that are delicious. One pound can make about 8 crab cakes. That's it, I don't buy anything else because I can never use that much of any one item.