I've had Pagid discs on front and Borg & Beck on the back with Brembo pads all round for around 3 years now. Seems to have been a fairly successful combination and certainly better than alleged "genuine Audi" discs that a local Audi indie I used to use fitted previously. That same indie has been caught out using inferior non genuine parts by other forum members
I no longer use said Indie any more. Thankfully I have a local mechanic who I trust now, and he also allows me to source my own parts if I want