For bursting monkeys on Ape Atoll, would it be better to use mystic, prayer robes, or void? I am 45 def so Ahrim's is not an option.
When you go bursting anywhere you always want the max "attack" bonus that you can get, so wear void, due to it's percentage boost to your max hit, mages book, and whatever amulet currently gives the most magic bonus, best mage boots, and ancient staff.
For anything like this, the debate would always be about whether to use Max Mage or Void.
With your Defence, you can't use max mage gear, so you only have the Void option left.

