My friend has two Giant buns after taking care of 6 baby ones. The owner let her take care of them until they were all fully grown and they were so happy with how well she took care of the floofs that they let her keep 2 of them. 

I remember her telling me how she could get all 6 to sleep on her lap and now she cant even get one to anymore, thats crazy! They also apparently thump a lot when they want attention. Used to own a bun myself but never knew what kind she was, all I remember of her was being big and whtie and really soft, super cute and fun animals they are.