Costco, BJ or Sam's Club, which do you prefer and why?

[rgG]

I love Costco. They have great food and appliances, too. I bought our washer there last year and just bought an LCD TV for my in-laws. I was a member of BJ's for a while and liked them, not as much as Costco. Costco is now a lot closer, so I only have the Costco membership.

I also do not shop at any Wally store, so that leaves Sam's out for me.