Yea, wetweb has them as the 'the mellowest' triggers but Bob doesn't seem a fan of the Xanth's for whatever reason
. Most Xanthichthys will even leave LPS corals and ornamental shrimp alone. I would expect a Sufflamen to be far less reef safe. Attitude would be very similar, more so like a Crosshatch, then a Sargassum, but the space needs of a Rhinecanthus. Why I'm such a fan.