Sorry but swordsmen are crap as they get destroyed by axemen. Vultures,War Chariot, and Immortals all come much faster, and crush archers.
I voted Jaguar because other than the super medic use, its useless for attacking anything.
Also regarding BEs, they likely have the worst upgrade over the normal unit, but they are still slightly better than the normal WE, and there's nothing bad about that. Another bonus, though one that's not being taken into consideration is that BEs come with the best leader traits for fast early setup of your cities. Feel free to reroll the map or just WB in some Ivory and enjoy stomping all over the AI with a top tier Civ and unit for early warfare. Also bulbing Engineering is a piece of cake for Sury too because creative, you can be stomping the AI with BEs and trebs quicker than with any other leader also given how much of a stronger position your cities will be in with Cre / Exp.