Kinda like an electrician being asked if he preferred getting electricuted by an outlet or a light switch.
They both bite you.
As an electrician, I can tell you they do both hurt like heck! Now, if we're going to talk a difference between 120v, 277v and 480v, there is a real discussion. Never been touched by 480v thankfully, and only brushed 277v, my reaction was so severe to getting hit, in my response to pulling away, I hit a ceiling support wire and put it through my hand - the shock was over quickly, the pain and bleeding from the ceiling wire, not quite as quick.
But, I digress, back to the discussion of 9mm vs .45acp....sorry I meant .223 vs. 7.62x39...carry on.