skunk2 are good but I'll go with some eibach sportline or RS*R lowering spring <one of the best!
With ground control coilove you'll always have a $H:Ty ride. when you hit a bump, you'll get a sound like if your strut just broke off or something!!! and with ground control coilove you should change your struts to a adjustable one because you are putting on harder spring with softer sturt. The OEM strut will die out quicker.