The Eibach Pro-Kit is a variable spring rate setup.
These are very comfortable as under light compression, and as the spring gets compressed more the rates will get higher.
If you are not tracking the vehicle and want to be around an inch lower than stock, these are great springs. I've owned vehicles with both the Pro-Kit to Sport line (more aggressive linear rate) and full coilovers. One of our customer's vehicle with the pro kit springs rode very nicely without being too rough or scraping. Now, on approaches of bumps and driveways, it is a different story on how steep it is, but I can say that it in not TOO low to the point that it will impair everyday driving.
Avoid getting too close to parking blocks!
The black under spoiler (if your car is equipped) is a nice warning of possible scraping areas before you start scraping painted surfaces.