here are my experiences with adjustable coilovers:
D2: hi-lo soft-hard...very soft also bumpy, very hard sakit pinggang...but handling-wise not bad
hwl: spring softens fast, cornering ok only, but bumps crazily on uneven surface
tanabe "purple": too soft to my liking
apexi ws n1: handling, cornering, stiffness all ok, just that it makes noise perhaps because the spring coils are too thick and they touches each other
cusco "blue": perfect for trackday, not street friendly
ohlins: i think its best for both world, servicing are expensive
bilstein: highway ok, loading people and goods also ok, handling ok, just okay
tein flex: very comfortable, agile, but not aggressive
tein HA: best i have used so far, i prefer stiffer ride, so better than type flex for my liking....very agile, responsive, sharper, not too bumpy
these are my opinions only....also, the are so many factory must be taken into consideration if u want a good handling car, tyres is the most important part.....then only comes all the bars, foams, braking systems....