Cayenne = Touareg. You think you spent time in the shop with your X5 wait until you deal with VW/Porsche/Audi service and customer support.

My Touareg got bought back (thankfully) but it was the worst car experience of my life. Liked the car when it ran but when it didn't I wanted to drive it off of a cliff!

Good luck with your choice - there are many nice vehicles to choose from; go for something that's proven, and reliable.