It goes like this; longlife oil is definately higher quality, that's why it lasts longer. For T&D servicing you can 'get away with' cheaper oil, and that's what VW recommend.
If you are happy with T&D servicing, then in theory your car will be just fine with the standard oil. But if you want 'the best' for your pride and joy, then you might want to spend more on the better oil.
Personally speaking I do about 6,000 miles a year, so am a classic T&D candidate. But to save confusion at the dealer my car is on longlife and I book it in once a year for a 'longlife' service. I'm sure someone will come along and tell me I'm wasting money, but I'm happy with that.