R1 Concept rotors for KH setup

I tried a set of R1 rotors a few years ago on my Mercedes. They were drilled and slotted, but the first set they sent me had too much runout. When you spun them you could see it, didn't even have to put a dial indiacator on it. The replacements they sent me were okay. I'm also the type that changes the rotors instead of turning them. I drive my vehicles pretty hard so I'd rather change them.