Like Dave, I'd take my car to the dealer, mainly because I have a good relationship with them. I'm confident that outside the warranty period, they would extend their goodwill towards any issue I subsequently had. In the past they replaced a Haldex pump at their cost for me, when Audi Technical were dragging their feet.
However everyone has a different view/relationship with their dealer, so I'm afraid you'd have to make your own choice.
However everyone has a different view/relationship with their dealer, so I'm afraid you'd have to make your own choice.