Serviced my A6 yesterday.
All parts from TPS. They're barely any more expensive than pattern parts.
Found the sump was leaking a little through the flange seal, so I dropped that to clean and re-seal. Was pleased to see there was no foreign objects in there. Although surprising how much oil remains in there even after draining it, which is really quite annoying.
All done for another year. First time I'd serviced it in my ownership so gave it a thorough look over, seems to be in really good condition.