Originally Posted by MA128
Perhaps new rear toe links or rear guide rods or rear upper links (not M3)?
My setup was similar to yours except I also have BMW performance springs. The rear end was still a little bouncy and too wobbly after M3 subframe bushings. So I tried the M3 rear control arms and Rogue toe arms, and now I'm happy. Nothing feels wrong anymore. So I definitely recommend those upgrades.
Still, you might also dislike the FSDs. Some people love them but others feel they're too soft especially at low speeds. That's personal preference. If the FSD luxury ride feels stupid, and you want a classic sports feel, that would be Koni Sports.