I understand your concern because you havent tried these rotors yet. I have some people called me and they think the same as how you think. Drilled/slotted or just slotted helps better braking. All of my customers were satisfied with the rotors i've sold them. The quality is a lot better than the blank rotors. My customers were impressed with the braking after they put on the drilled rotors. Driving is a daily thing so would u guys prefer better braking? It can save ur life and money