An issue that I turned with with wheel bearings that I am sure have now infiltrated front end parts:

Counterfeit parts.

Really know who your suppliers are... that means no eBay parts at apparently ridiculously low prices for name brand.

Good luck.

 

I believe $599 for 2 uppers and 2 lowers. The following is from Dynatrac's web site.
Benefits

• Reduce the cost of operating your truck.
• Big increase in strength from the OEM ball joints.
• Rebuildable without special tools – Lower repair costs.
• Long Life – Less downtime, less tire wear.
• Improves performance, handling and driver’s feel of the road.

Features

• High strength billet steel and heat treated bodies.
• Super strong cromoly steel, heat-treated stems.
• Effective seals prevent contamination and promote long ball joint life.
• Fully greaseable on the truck.
• Heat treated, precision ground stainless steel ball conforms to Military specifications.
• Teflon coated internal wear points.
• Fully-adjustable cup support protects against severe road impacts.

 

Moog is the name brand with a quality reputation. The other one is a generic house brand. Usually in relation to the question how long do you plan to own the truck.

While recently doing lower ball joints on a car, my first parts source had only 1 ball joint in stock. The next stop, had the other in a different brand. When I went to put them in, one box had another box inside of it which matched the first one I bought, and both ball joints were actually the same manufacture.