I don't see A8s very often so I have no need for cores for refurb. If I did get one in, I'd get its original calipers refurbished.
Plus on my own A8s I will replace the HP2s with the D3 single-piston equivalent as they are simpler, lighter, don't squeak, and have more pad options.
They may be useful for someone who wants to get a set refurbed for a simple swap-over without having to take the car offline for a week
