Personally, I like it more because of the higher variety of food and the fact that food selections are rotated a lot more often. Also, Costco focuses heavily on Asian foods which are absolutely my favorite. In my market, the people that work there are significantly better and nicer than those that work at Sams. Workers at Sams just seem like working there is a punishment of some kind. I do like how Sams has their aisles labeled though! Especially in the frozen food sections. Costco may not do this for the reason I first mentioned as they tend to rotate things out and have a bigger variety than Sams. But just a general like hey papergoods are over here or kitchen stuff over here would be nice. Not a big deal as I use Costco more often and learn the layout.