I'm using Koni Yellows and the Eibach Prokit. In hindsight, I'd have scraped up the extra cash and gone with some Teins. As mentioned, full coilovers are engineered to work together. The valving rates, spring rates and all that jazz are matched for optimal response.

BUT, my setup is decent. I've spent a few days in total testing out the different settings on the dampers and I'm satisfied with what they're doing for me now. I won't bother upgrading at this point.

About height adjustment on coilovers - that is a major selling feature, but there are also perches on the damper body that allow for half an inch up or down. How frequently will you want to change your height anyway?