We've had a thread similar to this before, but now that the first fight of the arc is out of the way, I'm sure there have been some changes in opinions. So, who's gonna die by the end of this arc? Hidan or Kakuzu? Personally, if you look at the pattern from the Rescue Gaara arc, I think it may be Kakuzu. In the first fight of that arc (Deidara vs. Gaara) we got to see a lot of Deidara's moves and stuff and only get a small taste of Sasori's puppets. Several chapters later, Sasori's the one who ends up dying. And in the first fight of this arc, we've seen a ton of stuff from Hidan, but all we've seen from Kakuzu is his reach out and grab your neck no jutsu. Then again, whenever the pair is shown the focus is usually on Hidan, and this arc has been going on for almost 20 chapters. I don't see how the focus is going to be able to dramatically shift to Kakuzu.