katit,

At 100k miles, you are due for a suspension inspection at minimum. My guess is you will find items to replace.

In my opinion, OEM or a high quality aftermarket... don't go for the "value" line. Any indy shop will likely tell you the same thing.

Shocks... Billy HD or OEM seems to be the most popular.

Have the subframe bushings looked at by an indy if possible. They are a $1200 job if you are paying them to do it, I made a few calls on those today.

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2002 X5 4.6is - Titanium Silver / Black Alcantara - Dinan Stage 2 - Bilstein/Eibach - Brembo BBK ----SOLD---
1993 318i - Brilliantrot / Tan - bone stock daily driver