Which country would you choose apart from El Salvador? And even in the case of El Salvador, I think when the global crisis hits it will be felt everywhere more or less the same in case you are not self sufficient and rely heavily on society for all of your basic needs. But if you grow your own food, have a reliable supply of water and electricity you would be fine pretty much anywhere, even in an apocalyptic scenario.
Discussion
Based on my research those countries which we consider saying "3rd world countries" were fallen way less in a global recession than a western country. I think a country like El Salvador who is producing their own food and people get used to live poorly are not falling so deep like a wealthy country. Why? I think that a guy like me who is living in a big city is fucked up when the jobs are gone, living conditions are falling and the shops are empty. Just in my country nearly half of the population is living in big cities. These people will be lost and they will live from one day to another. Robbery will be high because they don't know shit about how to produce food. A country like El Salvador where the population is mostly living on a basic level it's way easier to produce for themselves the food and to share with the non-food producing people. Maybe I see it wrong, but that's my assumption.