I never bought the voice-changer helmets from the first or second movie, and now I wish I had. Is it true that this helmet will be released again for TF OTM toyline? I'm talking about the whole helmet, not those half-things that are nothing more than glorified Halloween masks. Will the sounds and voice phrases be the same? Are these decent to wear for adults? I'm asking because I was thinking of making an Optimus Prime costume for Halloween, either out of cheap wood or cardboard, or some combination of the two. I was also thinking of the BB V-C helmet as an option. Also, Revving Robots? Can anyone tell me what exactly these do?