I am heading out for my second backpacking journey of South America on March 2. My plan is to spend a couple of months visiting many pueblos in Ecuador, then the same in Perú, then a month in Chile, a month in Argentina, and finally end in Paraguay. At this moment, I haven't made a final decision of where I will live. There are a couple of towns I like - Moyobamba (Northern Perú), Arequipa (Southern Perú), Formosa (Northeastern Argentina border with Paraguay), Encarnación (Southern Paraguay border with Argentina). Moyobamba is the smallest with a population of around 55,000; Arequipa has a pop. just under a million in the metropolitan area; Formosa is at about a half-million; Encarnació has about 100,000. Those numbers are very general as the websites with population data have numbers all over the map for all of those cities. Arequipa is definately bigger than my preference but I have visited that city two times and I really like it. The others are all in the size range that I prefer.