Does Brand Matter with Food?

OK, so for all the college students I hope to hit home base with this blog entry.

Many food shoppers go to Wal-mart or your local grocery store with the attention usually to find food for the cheapest price.We all see things that we would rather by the store brand than the name brand, is there certain things that you would rather buy that's name brand or store product?

I know when I purchase drinking water at the store I don't mind getting the store product, its purified water. But certain things such as cereal or even snacks I have to get the name brand product. My reason being I can tell the taste difference in certain foods.
Does brand in food matter? I think so, with exceptions.

How do you guys feel on food products against store bought products. What separates your choice in decision? or does it even matter to some of you.