I like the Aisins , they are easy to put in , and also quite easy to rebuild.I just rebuilt mine again when I put them in my project.I cleaned them all up , and totally regreased them.They lock and unlock very easy.As long as they are well greased , and you clean them every so often so the gunk doesn't build up in them , locking hubs aren't that much of a problem.Another thing I do when I go offroad , once I hit the back roads , I lock my hubs.That way , I don't have to climb out when I do need 4x , I just shift and off I go.It beats climbing out of the truck and locking them once you hit mud or snow <img src="/forums/images/graemlins/nana.gif" alt="" /> It doesn't make that much of a difference in gas consumption either as its usualy not that long before you do need to lock them once your off the main roads.