I have had a couple Valentini puffers and a Huma Huma trigger over the years. They didn't touch my coral but one of the Valentini puffers ate my cleaner shrimp after months of being in the tank. In his defense I had gone out all day and left the lights off so I think it might have been a mistake on his part, oops. The other valentini never bothered anything, the cleaner shrimp would even crawl all over his face to clean him too. The Huma Hum didn't touch the coral but loved eating my hermit crabs... All in all they are both a gamble...
Good Luck, and hope for nice fish! :loldude: