I've had some crappy experiences with warehouse chains in the past. *cough*costco*cough* so I was really hesitant to try out Sam's Club.
To my pleasant surprise, I LOVE this store. Even if just for the pleasant staff. They have always been so pleasant and eager to help... something which is rare, and incredibly refreshing!
While they do check off receipts at the door, they're not assholes about it like some of the folks I've encountered at Costco.