I have a couple thousand miles on the springs.
The fronts lowered 1-3/8" (1.375") on both sides. The driver's side was 3/16" lower before and after the install.
The rears lowered 13/16" (.8125) on the drivers side and 1-1/16" (1.0625") on the passenger side. The driver's side was 5/16" lower to start. After lowering, the driver and passenger are within 1/16" of each other.
Ride is firm, but so was stock. I can't tell much difference, but most of the roads I drive are pretty good. My wife drives the car as well, and didn't have any complaints. YMMV if you live up north where the roads are not as nice.
Overall, I am very pleased with the stance. Ride could be better, but I still think its pretty good for lowered compact with 45 series tire running 50 psi. Price was also tough to beat. $147 shipped.