For JUST daily use the greasable U joints are more than sufficient, but IF you are going to go off roading in rivers, very dusty or muddy areas; then the sealed U joints would be the way to go...
The sealed units have double seals where the greasables only have one; unless the design has changed since I replaced one last ....
The sealed units have double seals where the greasables only have one; unless the design has changed since I replaced one last ....
