Just got my 2012 Q7 detailed by Len at In Depth Auto Detailing (who is an Adam's master). Car had a large amount of oxidation, surface swirls, tar or sap all over and general neglect (lease turn in). Paint now looks better then brand new 2014 Q7 on the Audi lot.
Thank you to Len at In Depth Auto Detailing and Adams, I have been converted away from all other car care products for life.