Good points @Pudding and @rich83
If this was a track car there's no doubt it'd be on PSS10s or V3s, set very stiff, on semi slicks, and so on, with no f*cks given about how comfortable it was.
I think it's worth pointing out (as much as I largely agree with with you both) that while some coilovers are designed for serious track use, some are designed for looking low and driving ok on public roads. As such, their respective compromises/weaknesses won't be the same.
I don't mind a coilover that's a bit softer than usual as I'll never track the car.
The V3s I had on my Corrado were way more forgiving than the V1s and V2s I tried on other people's cars. KW also had a choice of spring rates to choose from too. The likes of Bilstein et al you get no such service. Still, they all use the same 2.5" or 2.25" ID springs any way, of which there are dozens of makes, lengths, and rates available off the shelf. It's worth playing around with custom stuff to get the exact ride quality and height you're after.
Bilsteins are harsh over bumps. Monotubes are consistent though. I.e. the damping feels the same in winter and summer and no matter how hard or gently you drive it. Normal twin-tubes (OEM and VWR spec) get a bit floaty when the damper oil gets hot and thins out. The V3s are exactly like that. Bilsteins didn't last when I had them, they leaked on me after about 30K. Bilsteins like to sieze up, V3s don't because of the stainless bodies....but stainless is heavier than mild.......this is the problem, no one kit does it all. And price doesn't always reflect quality or lifespan either. Konis always leaked on me too.
The KWs were easily the most reliable coilovers I owned, and they're rebuildable. There's probably better out there now but the V3 dampers with some shorter springs to do away with the helper would work. I would get some roll centre correcting ball joints if you go mega low, otherwise you'll get shed loads of tramlining and bump steer. No one ever mentions that either