These threads may help:
Besides Bilsteins...are KYB shocks any good?
KYB instead of Bilstein???
The consensus seems to be Bilstein is first choice, Sachs Boge next, and KYB a long step down from there.
2003 Firemist Red/grey leather SL 500
2015 Palladium Silver/black mbtex GLK 350
1987 Smoke Silver/burgundy mbtex 300E Sportline (SOLD)
Click to see 87 300E