When the day comes I'll probably go with the Koni Special Active set:
https://www.bimmerworld.com/KONI-Act...F32-sport.html
These get great reviews for sport/street dampers. There are more reviews on these over on the F30/31 pages. I had Bilstein B8's on a previous car and those were a little too stiff for street for my preference. (B6 and B8 are vavled the same)