What would be the best deal point wise? I don't care where I have to leave from in South America (EZE preferred), and don't care where I go in Europe (AMS preferred). I have BA, AA, AC, DL, UA, and AMEX MR points/miles. I want to fly in premium cabins (understanding that most flights to/from south america and carribean don't offer 3 classes but only 2). Thanks!