Over the years I have had quite a few 4x4s including a Series 11A Land Rover, a Range Rover,a Mitsubishi Shogun, a Toyota Landcruiser Amazon, a Mercedes ML(old Shape) a Mercedes ML New shape and a Cayenne S.
Of them all the Range Rovers proved the most troublesome with constant faults rattles and poor build quality. The Japenese models were virtually trouble free and the Landcruiser was a wonderfull car and so capable but hugely boring.
The Mercedes were also boring with plenty of faults and high depreciation. The Cayenne has been faultless over the past two years and I enjoy driving it. The depreciation on all 4x4s is high at the moment due to green issues and tax,but the Cayenne is no worse than the others.
Do I like the Cayenne? Now I have got used to it's ugly mug, Yes.
Would I buy another ? Yes. Deposit paid for a GTS.
Our Daughter also has a Cayenne and apart from the tailgate closer needing adjustment she loves it too. She has done 25,000 miles in 2 years and she wants another one too.