I have coilovers, Cuscos. They make your car sharp as a razor on tracks and smooth roads at speeds. 5 way adjustable so you can dial in more camber than you can shake a stick at, turn in is fantastic.
On the down side, its a midnight ride to rock bottom row. The about town bumping is brutal and anything under 50mph is bumpy as hell, real hardcore, I like it, most hate it, especially if your better half has a large chest.
There is no warning that the car is going to let go either, and when its gone, its gone, unless you have razor sharp reflexes like me(lol) Big Andy will vouch for me on that one.
Its an aquired taste, best to try one first.
Hope that helps.
Callum W