It really depends on the quality of the parts you want to fit to your car... Tein is high quality and it is a complete kit which, as you can see, comes with rear shocks and bushes to suit the leaf springs. Compare this to say the XYZ coilover kit and you receive no rear shocks and no shackle bushes. Tein is made in Japan, XYZ is made in Taiwan Tein coil springs are made of high quality springs steel, XYZ coils are not. Tein struts are made of solid steel mounts, XYZ lower brackets have been known to bend (in BA/BF) Like always, there is a good reason why you pay more for one product compared to another when it comes to Suspension