My valentini puffer has so much character, he is easily my favourite fish. very funny to watch, he's like a human sometimes. They are very smart and always greet you when you walk in the room.
Mine is reef safe (only time he goes near them is to sleep in them), and leaves my CBS alone. He occasionally tries to get the snails, but i think he just does it sometimes because he's bored, i've never had a dead snail
Highly recommended fish