Savior war v Whisperer war

Which do you prefer and why? I think I prefer the Whisperer war arc. I think just because it's more closely related to the walkers, instead of just humans being crap, as with the Saviors. What I think is funny is that I've heard people complain that the Whisperer arc is too short and that's why they don't like it, but they don't like the Savior arc because it's too long.