While this may not apply to your situation, I actually *prefer* the Bilstein HD shocks on both my car and the wife's Audi. I suspect that my preference remains the same for Comforts vs. HD given any vehicle with similar mass.

Last year, I made the mistake of going with HD on the front of my E420 and Comforts on the rear. The car is noticeably more stable at highway speeds if something (or someone) is loading the rear shocks. Planning to swap out those horrid shocks for HD's in the rear shortly.

The Audi came with Boge TG shock absorbers from the factory, only had 90k miles on them when I purchased the vehicle. Mechanic who specializes in Audis commented that they were in perfect condition. Car seemed to bounce along imperfections on the highway, and was a horrible ride by my standards. Replaced with HD's recently and the resulting ride is firm, much more controlled.

Both my wife and I are used to motoring in W. Europe, so it may come down to personal preference.

-DM

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1995 E420 SE black/black
2004 Volvo V70R AWD