I used to belong to Sam's Club, and before that, BJ's. We also have a Costco here, and I went there once - but they didn't accept my credit card at that time (This was a long time ago and my memory is really ridiculously hazy, so I don't remember which one it was or what the reasoning was - sucks to get old, eh?) and so I didn't go back.
I've been thinking, for a long time, that I might want to get a membership to one of those places again. And, I wondered - do you have a membership to a warehouse? Which one do you prefer, and why? What do you purchase there? What do you think is a great deal, and what would you steer far away from purchasing there on a return trip?
As a clarifier, I usually do a big stock up at Wal Mart on the 15th, a second trip for meats, veg and fruit to Harris Teeter also on the 15th, and then a trip probably twice a week to either or both of those places for a few items. I also try to get to Trader Joe's once a month for some of the more speciality items.