Brainstorm is perhaps most famous now thanks to his being a member of the Lost Light in James Roberts' beyond excellent Transformers: More Than Meets The Eye series from IDW. So much so that I'm not even going to talk about it. Let's just say that I love his portrayal in the comic; it's so much better than the portrayal in Headmasters. My only concern was that with an increase in popularity would come an increase in price. I've actually been tracking Headmaster prices for a couple of years predating the release of More Than Meets The Eye and they've actually remained fairly stable, so I was glad for that. After finding one in good condition, I placed an order and received him just before Christmas.
Brainstorm is partnered with Arcana, at least in the American G1 series. As everyone knows, in the Japanese series, Brainstorm is the head while the body is a transector. I'm not a fan of that version for one reason: what does becoming a head do for the whole disguise theme that the Transformers name imply? The Headmasters entire purpose in life is to become a head? Makes no sense. Sorry, rant over.