I replaced a set of Moog problem solvers with these. The Moogs were only 7 years old. The 'problem' solving aspect of the moog design was not effective. There was a metal centering ring in the moogs. This had de-centered itself, I suspect when braking in reverse, and the strut rod forever after was resting on the frame bracket.These do transmit a slight amount more road noise, but are so much nicer over bumps and when braking that I'll gladly take the tradeoff.If afraid of Polyurethane's possible squeak or the harder bushing material, I'd go with Raybestos Professional grade for this application.