Vanilla Beans [moved from Home Cooking]
Tahitian vanilla beans are more delicate and floral. They have an amazing scent and I really like the flavour, but find I have to add more than I would when using Madagascar beans.
As far as I know, Madagascar and Mexican beans are the same variety of vanilla, but taste somewhat different due to the climate/soil/growing conditions. I've never bought Mexican beans, though, so I can't say what those differences are or how noticeable they are.