I'm looking into to some new rotors and I was shootin' for some slotted ones. I plan on going with pads from Stillen, but after my research, I'm confused about the difference between Power Stop and Power Slot rotors.

Are they the same company or something, because I've got the same part number from both companies.

Thanks.

They are two different companies, however I believe they are related ( i.e father and son)

Is one better than the other?