And I should clarify something about the *warping*.
Considering *degrees* of warping I'd say my current rotors........(Chinese set #3 from above which were used for 2 years and then turned about a year ago & are still running great)............are currently only mildly warped.
IOW, You can't really *feel* it in the wheel so much as you can *hear* when you're braking at speeds above 40-50mph.
Come off a freeway offramp & there's the sound of warped rotors. Now my first set (the original Toyota OEM's) were warped so bad that I was coming down a mountain during about the 2nd year of ownership & those suckers whobbled the steering wheel like nuts. Fwwwoooop.........in the trash they went! Second set of OEM's were MUCH better but eventually warped too.
So in this case, I'm simply looking for rotors made with the best materials available......(note how set #4 warped HORRIBLY within a month & the folks at Pep Boys knew why!)

. Junk rotors can't take ANY heat!!