The KYB's work just fine, and I put like 40k miles on the ones that were in my Challenger without any issues at all. But, they definitely give a harsher ride, especially with larger torsion bars. It's not unbearable or anything, but it is definitely noticeable when you swap out for a set of Bilstein's or Fox's. The KYB's aren't horrible by any means, especially considering what they cost, but the Bilsteins are much better shocks. And the Fox's are a step up from them.