There are a couple dozen small islands all surrounding Sulawesi, and they all just use the Sulawesi Toraja name even though they aren't. It is difficult to determine from the marketplace whether a Sulawesi is authentic or not, and all that really matters is the taste, but unfortunately, the outlying islands quite often grow a lower quality bean with less complexity. If you can trace your bean back to the village it is from, you are a step ahead of the competition.