Okay, so there's this big bag of cereal [in this example, Cocoa Crunchies]. Cocoa Crunchies is a generic cereal, meaning that its not well known. But its cheaper than the box, and is bigger too. Then you go to Cocoa Puffs [a much more familiar name than Cocoa Crunchies]. Its a small box, costs more, but is widely known because of its commercials and the trademark bird. So, which one do you want? The generic? Or the brand name?