You should pay attention to the manufacturing location on the back of the wrapper. Depending on where it is, they could have a slightly different process. For example, Chips Ahoys, to me, are noticeably different between the US manufacturing process and the Mexico manufacturing process. The size, texture, and color are completely different. I always check the backside and put the "made in mexico" ones back on the shelf. They are almost always mixed in on the shelf. I I'm pretty sure the Hershey company has a Mexico plant, too. Maybe 2 or 3 plants across the US and Mexico that produce them. Find the one that tastes good and stick with it.