Auto or Manual hubs? Which do I install?

[Destructo]

Alright, I just swapped in a 12 bolt truck rear end and also the matching 10 bolt front, now this came out of a full-time 4x4 so the front axles don't have hubs in them. I have the factory auto hubs in the other axle which worked fine before, or I can install a set of Warn manual hubs I got with the axles, which ones should I install? I hear the manual hubs will be a lot stronger and probably help gas mileage and decrease wear on my front axles.