I'm confused by the poll. Outside of the Jester's Festival and 2 Year Anniversary buffs, my toons level at the same rate except when I can stack gear I get from rewards which has buff in kill exp. Even with that, it's a pretty small gain since I'm not wearing 7 pieces all buffed to max.
Thus, the option I'd select, which is not present, is "None of the above".
Personally (still learning ESO) I feel leveling via Mag NB is super fast because of permastealth and the ability to pick and choose battles and simply skipping all the irrelevant mobs etc.
What do you guys think ?
You dont level fast by skiping the fights. You level fast by killing everything what stands on Your way without swaet and gaining additional exp for it.