Best Engine oil for Audi TT RS

I use Liqui Moly 5W-40 which is on the VAG 502 and 505 list.

Best Oil for TT RS driven harder than normal Motul 8100 X-Clean C3 5W-40 Oil. Trackdays Motul 300V High RPM 0W20

I run Redline 5w-40. I do not use the 'Euro' formula version, but the regular 5w-40 meets the VAG oil specs for a (2012) TT-RS. I used to run Mobile 1 0w-40, but I believe that Redline, Amsoil, Motul, and a few others are a higher quality oil (ex: Ester base stocks for Redline and Motul 300v).

I run the OE Castrol because I still have CPO warranty for another year.

I'm using Castrol Syntec Euro formula which is a 0-30 oil. I've been doing oil analysis with every oil change since I got the car. This change was a short interval with just 1400 miles on the oil between changes. Right in the middle was a track day where I did about 130 miles on track, six 20 minute sessions. I think I was seeing peak oil temps in the 240s with very quick recovery back down below 220 during cooldown.