Don't forget the MD11, also a favourite of the cargo operators due to having plenty of spare thrust for hot and high ops. Although it's also a truism that high altitude locations don't generally have a lot of heavy things to export. AFAIK Quito's main outgoing cargo is cut flowers...
Mexico main cargo are avocados for Europe, Bogota fruis and flowers too. There isn't enough cargo offer for the demand that exists now a days. We are leaving cargo behind every single flight between these airports and Madrid.
