I've no doubt his set ups are very good but this is AP's specialist area and they are known as world leaders, £2K is alot of money granted but in line with a similar Brembo set up, I'm really lucky as I'm not paying anything like this as my previous car was used for all the development work so I'm getting a 33% discount, if I wasn't I would probably have been tempted to see what your Guy had to offer or would have gone down the route of TT-RS set up for its OEM look.
I attended a track day last Friday and tge standard S3 set up is pretty good but after several laps the pedal goes soft and at one point went to the floor just prior to the chicane at Oulton park, thankfully I was treating the car gently for 2 reasons - it ws it's first outing with 1,300 mikes on the clock and secondly I was desperate to preserve the tyres as all spare money is supposedly for the Baby fund !