I have been using Sachs for a while and have found them to be very good. My SD is Bilstein HD front and Sachs comfort rear and it rides great. My bro's W123 is sachs comfort all around and rides very nice and smooth. Used sachs comfort all around on my 420 also and it drives very nice, no excessive body roll or bounce, just nice.

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-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)