There's no non-Greek feta!
As I am living abroad, and I am a big cheese lover I sat down and contemplated whether I'd be more sad to lose any of the Greek cheeses. Kaseri is meh, anthotyro, manouri also meh. I narrowed it down to the two big ones: Feta or Graviera. It was tough for a few seconds but then it was crystal clear. Graviera I'd miss, especially a sharp, spicy Graviera from Crete. But Feta, losing Feta...it can't be done. Non-negotiable. There's nothing like it in the world. The only place I do not put Feta is in my bedroom and with chocolate, anything else is just brought to another level by it.