I used to have Skunk2 Coilover sleeves on my stock shocks. Terrible ride but I don't think I blew my shocks. Now that I have Tokico blues with Eibach Sportlines, I'm very happy.
I was on Eibach Pro-Kit (or what is thought to be an Eibach Pro-Kit) for I don't know 2-3 years..and my shocks finally took a dump..a major one at that..so I ordered kSport Kontrol Pro coilovers