As for 1 ton hubs, I've yet to break a factory one.
As for internal spline 1/2 & 3/4 ton hubs:
My vote for durability and strength would be Selectros. Not sure if they still make them. They are the ones where you turn the whole outer part (they also made the dial type, but I've never tried these). I've also seen them with another name, but the same internals. I ran these on my 44 and never broke one, the only problem is unlocking them, they tend to bind up, a front locker makes the problem worse. Definitly the way to go if you are open, or don't mind fighting them to get them unlocked. It helps to shift into 2wd and drive a bit, then try to unlock them. Another down side is they tend to get kind of gross, I keep gloves on hand.
Factory Warns: Junk. Lasted 5 minutes.
Superwinch: Junk. I've borrowed two of these from one of my Jeep buddies and blown them both the same day I put them on. I will say that their Jeep Dana 30 hubs seem to be good, lots of guys like them.
Warn Premium: These seem to be pretty strong, but the locking mechanism is a flimsy piece of sheet metal. DO NOT ever force these hubs (ie pliers), or you'll bend this piece. However, they do seem to unlock farily easy, as you are not actually moving the splined part, you are simply unloading a spring with the dial.
Pete
'83 K5, 350 TBI (ex 6.2), 700R4, NP208, Dana 60/14 bolt, 4.56s, Detroits, 3" lift, 15-39.5x15 TSLs
'97 Dodge 2500 4x4 CC LB Sport, Cummins 5 spd