XOC,
Actually there was a noticable steering difference. I noticed the steering wheel turned freer, in fact so much so that I jacked the truck back up and checked the bearing adjustment in the front end. There is no doubt in my mind that there was something wrong with those hubs. I had no idea this was abby normal until I replaced them. I've only driven my X so I've never experienced any different.
As for the hub quality difference, none that I know of. A hub is a hub is a hub. The quality of the MM is comparable to any Warn I've seen, so in my opinion, it is just a matter of choice and personal opinion.