The balljoints are breaking? Where or what is breaking on them? Moog is good quality stuff. If maybe one has broken I would lean towards a defect in the balljoint of some sort, however if you have broken two or more I'd have to start questioning the front end as something must be causing it.
Give details of the vehicle and hopefully someone here can help.
Hmmmm, I never knew that. I guess these companies are only concerned with the bottom line, rather than putting out quality parts. All I can say is buy a North American product whenever possible. How about TRW stuff, or are they outsourcing like everyone else?