There are lots of reports on other forums of quality issues with more recently fabricated MOOG products, since they sent production to Asia. One can always hope to receive the older made in North America stock to arrive. I agree the Problem Solver line from 15 years ago was top knotch. When I did my ball joints, I removed one which the PO had replaced with a Moog PS, and the thing despite the serious beatings I gave it in Baja, was still tight as.
It is my opinion that Moog is riding their formerly good reputation, and once all the stock sold is coming from Asia, and begins failing prematurely, then perhaps their run will be over.
I think Raybestos Professional grade is probably the best available these days. They are the former Spicer. Avoid 'service grade' parts, and I hear that the Dorman control arms use metal half as thin as OEM.
Its all a crapshoot anyway, they will throw anything in a box and sell it. Brand names should be stamped into the metal so one actually has an idea if the quality they seek is within the box, rather than a service grade part.
It sucks being a victim of crappy auto parts, but shopping by price alone has led us down this path.