This Eibach Pro-Street Coil Over Kit is one of the more comfortable single adjustable coil-overs, however, if you are looking to get a system where you can adjust the comfort, we would highly recommend a coil-over with adjustable dampening/rebound. Below are a few Coil-Over Kits that have adjustable dampening/rebound on the shocks.
Pedders Extreme Xa Coilover Kit , Item 393836
Eibach Multi-Pro R1 Coil Over Kit, Item 47805
Eibach Multi-Pro R2 Coil Over Kit, Item 47807