What is the MOST stressful / deadly snake to handle as a venomous keeper or catcher?

Calling all venomous keepers, snake catchers and snake handlers — we all know the “deadliest snake” list based on venom LD50, but there are so many other things that go into deadliness besides just that number.

So what's the most scary snake to handle or catch, considering factors like defensiveness (likeliness to bite and re-bite), likelihood of death (factoring things like venomous / dry bite percentage, accuracy of bite, venom yield per bite, as well as LD50), skittishness, athleticism, and general unpredictability?

Are coastal taipans and black mambas the top contenders? TIA!