After my track exploits my OEM discs and pads are approaching the end of life so I'm thinking of a brake upgrade. This directional grooved and vented disc and pad package from Tarox looks like a good option to me (this link talks about the TTRS but it's the same package for the RS3)
Tarox Motorsport Brake Upgrade Kit For Audi TT-RS | Audi Tuning Mag
I don't think there is a need for a bigger caliper or an aftermarket 'big brake conversion', there is plenty of stopping power from the standard items, though I'm open to suggestions if there is something show stopping out there.
What I'm looking for is discs that can handle the heat cycling of the odd track day, keeping the pads deglazed and something that will still work well on the road without too much additional noise.
Also if you know of any good suppliers and fitters within reasonable range of south Wales that would be useful too. I'd be happy for any sponsor traders on here to contact me with ideas.