From past experience using eibachs, they are middle of the road as far as stock to full racing suspension. They do offer much better handling characteristics from stock, but not the best (pro series mind you), But they also don't sacrifce ride quality. Sure it's a little harsher, but nowhere near as bad as some of the coilover systems out there. IMHO they are the best bang for your buck. Add some KYB gas shocks or other reputable brands and you are set (chair) . If you are active in autocross, solo II, etc I'd hold off on em and wait for a coilover system from eibach or someone else (reputable of course).