This looks a lot more solid. The OEM ones are meant for a bit more cushion, hence the wobble. When I bought RUCAs a while back, I did not know of any other alternative other than OEM Lexus. More solid bushings might be from a Supra. It was not until this thread http://www.clublexus.com/forums/susp...er-thread.html
did we find out that the Supra RUCA was identical that of SC. There is one last option that it can be; there is an OE spec RUCA available (ebay) now. That might be it and at about half the cost of OEM Lexus.