Originally Posted by
KaPe
"Medium" zones have miniboss guarding the entrance, one more at the end *and* they buff the final boss' hp and give them additional ability. Also, elite mobs - they aren't all that tough, but they do take longer to kill. If you weren't breezing through normal enemies, these can slow you down too much.
No need to rush it if your character wasn't already mythic geared. Level 5 cloak is 40% reduction, a pretty massive jump - might as well wait until that one. If you weren't already doing extra zones, you're also behind on research, which includes one "cheat death" for solo character. No point risking it before those extra 15%, it makes a lot of difference.