I don't run a motorsport company, just have my personal experience to go from but maybe you'll want to add Taiwanese to your Chinese pillow ball crap list.
Get clunks from left side of the car, so when I got my alignment done I asked them to give the suspension the once over - result, all connections tight, clunk is coming from pillow ball slop. The suspension has been in for 1yr, 12 driven to track days and <10,000km. Is that f**king ages?
John, just looking at improving my rear setup, front already has coilover struts with camber tops and adjustable castor rods.