My vote would be Blood on the World's Hands.
It's kind of strange to live in an age where Bruce is struggling on Blaze material.It would have been great having Blaze and Bruce singing The Educated Fool Together with the armonies. Como Estais Amigos is pretty popular in South America and could be a nice choice but I doubt Bruce have the right voice for it. In The last tour I don't think he did great versions of Sign of The Cross and The Clansman either but still enjoyable. His version of Lord Of The Flies was a train wreck to me. The Same Would happen for Fortunes Of War . It is meant to be sung with a baritone voice