I like the quilt-like appearance brought on by using the packaging of different brands. The nine glowing yellow islands sitting in the Atlantic Ocean I find annoying. This happens a lot because those New England states are smaller in area than most.
The design problem evaporates if you choose a small multiples approach. As shown below, there is the added benefit that the regional pattern of brand preference is clearly visible whereas in the original chart, it is rather hard to figure out.
I won't comment on the data source here. It's highly suspect.