Rune of unending thirst VS Wafting devotion for leveling

Classes Death Knight
1

Was looking up ways to increase movement speed while leveling besides the consumables etc, I was wondering whether anyone knew if Rune of unending thirst or Wafting devotion enchant would yield a higher movement speed from 70-80?

I assume since the rune is percentage based it is the one to go with, but figured I would ask if anyone figured it out and might know lol

2

Unending thirst giving 10% haste and movement speedafter every kill for 10sec is nice if you do a lot of kill grinding. That being said, FC imo is still the way to go as you would kill mobs faster and self heal from the procs.