Haven't tries the Sachs products on any of my cars... pretty much a Bilstein and Koni guy over the years.
I have Bilstein Sports and H&R springs on my E55 for like 6 years now ... really like the combination but the H&R's have "settled" over the years in the front (only) so I am now about 5/8-3/4" lower in front than I would prefer ... makes for some very slow ingress and egress into certain driveways, etc.
The Bilsteins I have no complaints - just right to my way of thinking. You might look into Koni FSD shocks too... advertised as compliant when cruising around, but aggressive when driving harder.
I have Bilstein Sports and H&R springs on my E55 for like 6 years now ... really like the combination but the H&R's have "settled" over the years in the front (only) so I am now about 5/8-3/4" lower in front than I would prefer ... makes for some very slow ingress and egress into certain driveways, etc.
The Bilsteins I have no complaints - just right to my way of thinking. You might look into Koni FSD shocks too... advertised as compliant when cruising around, but aggressive when driving harder.