I agree with the spring and shock combo. It's just more of an issue where one has to match the springs and shocks properly. Can't go hard springs with something like basic Monroe shocks, would just ruin the ride. Having said that, I would go Tein/Eibach with Koni/Blistien combo over a basic Tein coilover anyday. Coilovers are much less work, and good for adjustability, but if you have a great setup to begin with, you'll hardly be wanting to mess around adjusting it anyways.