For our latest stock showdown, we turn our attention to the fast-food industry and pit two titans of burgers and chickens on the go against each other, McDonald's Corporation and Yum! Brands, Inc. , in order to conclude which of the two make the best investment. McDonald's Corporation , founded in 1955, is the world's largest fast-food chain, serving more than 100 countries at more than 36,000 locations and is probably among one of the world's most famous brands.