I say Bronco.
The GM trucks for some reason always seemed cheaper-made to me, I guess because of the crack-prone frames and door hinges that get all sloppy (plus the hoods that kink if you look at them wrong while closing them). A couple of these issues were addressed in the '92up trucks, but then you got the weak A-arm IFS frontend w/clamshell diff to deal with.
This is not to say the Ford is perfect, but they seem to have fewer issues IME. The '92-'96 trucks seem to be best of the bunch.
The coil-sprung D44 TTB frontends IMO are every bit as good as the solid axle GM used if you set it up properly (mostly this just means getting the steering linkage back in alignment with the axle beams if you lift it, something very few lift kits do properly out of the box). They have a much better ride too.
Good quality ball joints will also last much longer in either frontend than the cheaper junk (FWIW, Moog doesn't seem that great anymore, stick with the Spicer (Raybestos) "Professional Grade" stuff).