The only two I'll be looking at are Iron Kingdoms and City State of the Invincible Overlord. I really have more than enough campaign settings already, and I seem to persist in running a homebrew (but very Kalamar-ish) campaign.
I'll never run Scarred Lands, but I've got it. I'll never run Forgotten Realms, but I've got it too. Probably I'll never run Rokugan or Dragonstar either, but I bought them. I just need to stop. And I can. Yup. Any time I want to. Yessiree.