OEM works best, in my experience. The actual>>
insert fit is most important. If the rubber is the lest bit different from OEM, the blades will not work very well, much less fit properly.
Ed in San Jose. BMW CCA member since 1987 (Nr. 62319). Golden Gate Chapter. '97 540i 6 speed. Build Date 3/97. Aspensilber over Aubergine leather.