I got this from halfords . Good quality and i never needed anything else
http://www.halfords.com/webapp/wcs/stores/servlet/ProductMobileDisplay?catalogId=10151&langId=-1&categoryId=255215&productId=862421&storeId=10001
Hi David,
I looked at the Allroad when I bought my current A6 Avant and it was the air suspension that put me off. I have previously had a Range Rover with air suspension and when it went wrong it was eye wateringly expensive. Unless you think you really need the extra ground clearance I would go for the standard A6 Avant.
Regards
Alex