coilovers in general ride very rough, although if your looking for looks and handling, they're excellent...at lowest extreme of adjustment the car will look and handle unbelieveably, but it will ride like a go-kart- the other thing with coilovers is if they're totally dropped your struts will constantly bottom out and they'll last for about 2 months...eventually i couldn't keep replacing them, so i got some dropzone springs and new struts and haven't had any problems...
i haven't had direct experience with ground control, although they're supposed to be top of the line coilovers(ground control a division of eibach), but the kybs won't last any longer than stock with coilovers at lowest extreme(i've gone through 3 sets) :sosad: but with my new setup...i have them and they've held up...
it depends on what your willing to sacrifice, either looks and handling for a good ride and no worries, or sacrifice the ride quality for handling and looks...it's a tough one... hope i helped :clap: