I'm running H&R front springs with air bags rear and Bilestein B6s with Eibach Anti-Away Bars and mine is firmer than factory for sure but not harsh or abrasive I don't feel like. Butter smooth and stable on the freeway at speed and nice firm (enough) for the on \ off ramps too :-) That said, the B6 shocks are REAL hard to come by at the moment...