Depends on how offensive minded you are. Darui is *l out R1 throw of the dice, you have to be killing ninjas as your win condition. Danzo allows some flexibility (eg close blitz mirror matchup) where if you lose initiation, at least your p1 can return to life and you might have a chance compared to facing a blitz team with higher initiation while using darui where its almost 100% gg since your opponent moves first.