I know price is not always a reflection of quality. However, I see parts from raybestos " professional grade" and ac/delco running at a 50-75 percent premium over moog's "problem solver" line. I'm on good enough terms with my local (privately owned) parts store that I could order in 2 or 3 brands and compare...I know the last moog pieces I bought (for my daughter's sebring) were identical to the cheapest name in the store. But twice as much money.