Diablo 3 is fundamentally broken

[Trevan]

I've run with 12% movement speed boots since either Normal or Nightmare (forget which). I refuse to give them up for anything. No amount of damage, health, armor, or resistances are worth losing the ability to kite. So, yes, even with +movement speed boots mobs simply are faster in Inferno than they are elsewhere. Try watching the next fat zombie elite pack (the ones that break off the torso and chase you when they die) - even without Extra Fast, they will be faster than you. This isn't some intangible difference, something that can be confused in the heat of battle. This is flat out measurably faster.

Honestly, at the speed some of those mobs run, I wonder if +12% with +60% tactical advantage will even be enough. It doesn't feel like it.