H&R Full coilovers - they ride so VERY close to stock when dropped all the way down. they will be my first purchase for my next car.
a coilover is like this:
www.ground-control.com - that is a "sleeved coilover"
a "true" coilover system has the shock body actually threaded, no sleeves.
it depends how low you go if you actually need a camber kit, i have about a 2.5" drop on all 4 corners and no negative wear on my tires.