I am going to ask a similar question that I have seen here before. I have a late '99 4wd F-250 and know of the common problem they have with front bearings and since they are sealed most will just replace the hub assembly. I have 93,000mi and am running 35" tires on my original hubs/bearings with no problem but am going to go ahead and replace them for the sake of preventive maintenance because it will happen (go bad) when I am out of town or something. Question is I have looked on ebay and have seen them sold as sets for $230 to $400 plus. They all have a 1 year/unlimited mileage warranty. Would you trust these? They use the same manufacturer part # but under different names...i.e. GMB, Autoparts International, etc......none I have heard of. Just don't want cheap but also don't want to spend more for the exact same thing. Anyone have thoughts, ideas, suggestions, etc? Thanks!!