The most recent encyclopedic work, guide to star wars universe volume 3 uses the hairy huminoid look. so it is the most up to date look. Also the brothers hildrebrant I think it was used the hairy humanoid look for the shadows or the empire collector cards, and those are the best bothon pictures anywhere. they are stupendous artists. My oppinion is that all 3 looks represent bothon racial differences, like we have colors.