Easily North Korea is the better option to actually live in, but only if I were already born there.
To live as a foreigner is much more debatable. Because government would still see me as outsider and have their eyes on me. Add to that the fact I’m not Asian and I probably would never really be seen as a true North Korean citizen and be too exotic in a closed country to really blend in.
So I think Afghanistan would be easier to blend in and keep a low profile (at least in comparison), although I admit I would be much more scared to live there nowadays than in North Korea.
Dude, your Brazilian, you can have any cutie there with such little work.