Not Eurobonus for me for a simple reason. I mostly fly Europe-South America and they charge 135.000 miles for it.
South America-South/North Asia looks better for 150.000 though and SouthAmerica-NorthAmerica for 75.000 too.
Also, South America and caribbean are considered same region so, for example, Buenos Aires to Nassau are 45.000 in C. What about the transit in the US?