Currently lvl 62 using lightning arrow and lightning rod along with magnetic salvo, herald of thunder and wind dancer. I've been reading different build guides that are using an orb of storms build instead of magnetic salvo. This includes herald of ice, wind dancer, and cast on shock and cast on freeze.

Is there a big difference between the two? Do you have a preference for magnetic salvo vs orb of storms and why you prefer one vs the other? Thanks.