i have the HA coilovers with pillowball top mounts dropped about 100mm all round with camber set up, just about clears speed bumps!
they are stiff as hell and great for handling with pillowball top mounts. I wouldnt say they are comfy on anything but a completely smooth road!!
they are stiff and a bumpy ride but handling benefits come at that cost bro.
heres a pic of how low i have gone. bear in mind my wheels are 14's with 195/50/14 so the underside of the car is low, camber is also setup for fast comfortable cornering.
mine dont scrape at all even over bumps if set up well.
they are adjustable in every way possible and are can be set up differently for each persons preference. i prefer the ride to d2's personally.
this is how it looks on the road dropped on 14's with 55 wall tyres
it can also go about another 50mm lower!!!