I have nevr driven a car on coilovers on the road that felt "nice".
Road suspension and handling is different to racetrack, and on racetracks you can dial out the poor handling with adjustments, on road, no one ever does!
Top quality conventional (non adjustable is ok) dampers (Bilstein and Koni, maybe Eibach although I find they are harsh) land springs (swear by H and R) lowered by 25-30mil (depending on starting car spec) will rarely perform anything other than brilliantly on roads on road cars.
Even top range top qilaity coilovers are generally mediocre at best on roads, unless you adjust them to the same height and stiffness as the conventional shocks, (in whihc case save yourself £500-£1000!). And lower quality stuff is pretty nasty on roads!
For proof if it were needed, go test drive a stock Evo8 or 9, 260, then try a same year MR.....only chassis difference is non adjustable bilstein shocks and slightly stiffer springs.......but you wont believe how much better it feels, how easy the improvement is to feel, in ride, grip, comfort and roll/pitch! And a stock evo does not handle badly to start with!!
Billy B8s and H and R-30 is plain and simple fabulous on an 8l S3.