Shock absorbers Bilstein or Sachs

I had Bilstein B8s with Neuspeed Sport springs and the damping is way better, and adjustable with clicks at the base of the shocks, with B16s even though the spring rates are significantly higher. B8/NSS were bouncy in comparison over expansion joints, etc.

Bilstein shocks will dramatically transform the on road experience

The answer is always the same. Bilstein 5100.

Get factory msport springs and Bilstein B6s and roll on. The springs will give the car a slightly more aggressive look than base E91 hight while still giving each corner plenty of travel. The B6s will give you a tight, yet smooth ride.

At an absolute minimum, Sachs shocks are worth the money, they're perhaps the one thing that has the biggest impact on ride quality. Being a more complex part than control arms and such, a cheap brand isn't going to have anywhere near the same ride quality.

After installing new shocks felt like a completely different car. No body roll or nose dive.

I did bilsteins and solved my problems.

I've had them for about 1,000 miles or so. Do they "work miracles?" No, but they are a marked improvement over the OEM Sachs. They are quite firm when cornering and braking, but compliant over rough roads at normal speeds.

My 325 ix was lowered by the previous owner on Bilstein and h and r sport, but it is a harsh ride.

Had my local shop install some OEM style Bilsteins in my truck, the shocks that come with the higher trim level, no lift or anything. This is what they sent me home with after the top not started backing off.