I also advise you to regularly follow the opinion section of Infobae.com (in Spanish however). I usually find them less repetitive than La Nación and other newspapers, and they often include themes about the wider continent, too. I also like the occasional writings by Fontevecchia of Perfil, the most trustworthy publication of the country.
It is not his best but definitely one where I think he was trying to reach something more seminal. As I read on, it was not really about the lost decade and I believe he was trying to uncover the gut of Argentina's rot or greatness (depending on your view). I do like his thesis on the causal factors that led up to the current ideology that Argentina has to invent its own economic model to break out of the rut....