What's the difference?

I like yogurt. Similar to orange juice, I prefer not to have little bits of stuff in it, so I prefer flavors like vanilla, lemon, orange creme, etc. Tillamook, my favorite brand (perfect consistency!) makes a "Vanilla" flavor and also a "French Vanilla Bean" flavor. The latter has a significantly better flavor. Why would you make two different vanilla flavors? If one is flavored by real vanilla beans (from France?), what on earth is flavoring the other one? What's the difference between them? Inform Me!