I've run Eibach sportlines before with koni dampers and to be honest found the sportlines to progressive for me. Sure they tighten up nicely when you chuck it into a bend but I just could't get the damping right on the shocks to suit the progressive spring rate (either too damped initially on small bumps and then underdamped as you really push them). I found that I also lost a bit of feedback with them on small bumps and road surface feel due to their progressive nature, all in all not that impressed but thats just my opinion... Never been in a car with Apex springs, wouldn't mind trying them though and the drop looks good.