Any 5w30 that meets or exceeds VW / Audi Spec 507.00 will do fine. Castrol Edge, Quantum LongLife, Mobil, Motul, take your pick. Just make sure it meets the proper spec.
Think you can also use a 504.00 oil which tends to come in 5w40 and is only used for fixed servicing schedules, but from what I have gathered the 507.00 is a better oil. So I would stick with that and change it as per the fixed servicing schedule which is every year or 9000 miles, whatever comes first.