Another, though not disagreeing, perspective.
Boge turbos great, but last time I tried them, had a fit problem which
created rattle. Ended up w/ KYB (circumstances dictated). Have heard
that quality control may be an issue now that Boges are being made
everywhere, not just Germany.
Haven't tried Bilstein HD ($$$), though sorry I didn't on both 245s.
Recently put touring class on a '92 240 sedan to try them. Very stiff
ride at slow speeds feeling every pebble, but nice above 50 and great
handling. Even so, Boge turbo (or Sachs) would have been better
choice in hindsight. KYBs have also worked for me, though would not
choose or recommend over any of above.
All cars have IPD sways.