I say Sprint for the lowest drop without going coil over. I'd like mine to be lower, and I have the H&R, but they drive really good. Probably gonna cut a coil off the front.(And we already know,,,"Don't cut the springs"..)
I really like my aerospeed springs. They gave me a nice drop the only bad thing is since I didnt change the whole suspension the car is really bouncy for the people in the back. But im never in the back seat while the car is moving so oh well.