I drove two Cayenne's back to back one had PDCC and PTV the other was just plain Air Susp. Wow what a difference the PDCC was just amazing a must have.
I was also surprised at how PTV made even slow speed sharp turns a dream.
I didn't think a 4500 Lb car could achieve these dynamics. Anyone else done a back to back and can comment. Should be able to put my order in on an S next week I hope.

 

I didn't do back to back but I got a lot of help from guys out here who convinced me that those 2 items were a must have. They were right. It is amazing isn't it? No regrets here. I just wish I had sprung for the ceramic brakes (big &) because of their lack of brake dust and killer stopping power.
The red brakes standard on the Turbo worked really well but the brake dust was killing me and had to clean them constantly.

 

I'm already 20k higher than I started so I'm stopping NOW and just going to put in my order.

 

Both options are a must have in my opinion. I'll be ordering them again in my new CTT refresh coming shortly...

 

Test drove both GTS and TT without, but because I surveyed this posting site often when I was purchasing, I chose both options. I'm very happy with both these options as this truck handles very, very well. I'm not sure if they matter as much with smaller vehicles.