From what I have learned. The best configuration would be stock springs (if you want to drop the car Eibachs or H&R) on KYB struts. The roads in Russia haven't been repaired after the WWII bombings and they obviously partially are very bad, and partially they don't exist. Kayaba struts live the longest on these roads and the progressive H&R or Eibach springs work perfectly with Kayaba shocks...