Not to inject a sour note into the thread, but I would take Ecuador of my list if I were in your shoes. ANd not becase of the biting insects!
My concern would be with the political life in Ecuador. Unfortunately, they are leaning more and more towards the project being led by Mr. Hugo Chavez of Venezuela.
If they continue on this path, you will soon see how authoritarianism will raise its ugly head, and how foreigners (especially gringos) will see more vitriol hurled at them by official government sources.
You can also expect them to follow the Venezuelan path of declaring all property to be the Governments, and basic human rights will be seriously abused as they are today in Venezuela.
From all that I have read and researched, I see no other country in Latin America (except Chile) where a retiree ex pat can have a modicum of freedom and peace other than Costa Rica.
Now if living under Communism is your cup of tea, then you can look at Venezuela, Bolivia and Ecuador as your best bets for that.
And no, I don't mean Socialism, I mean Communism.
( For the record, I am not the reincarnation of McCarthy)