Hello
All of your choices are nice cars.
we looked at the DS7, nice inside although it was very dark the only thing that put us off was no front parking sensors on the performance version, we then looked at the c5 in the other part of the showroom and as the ds salesman put it, all the same bits but in a different body and a lot more for your money. We would have definitely seriously considered the c5 but for a poor salesman at our local dealership who couldn’t find the car and then told us the 3008 was exactly the same car!
Had one of the first cx5’s when they launched in the UK and loved it, (before our Motabilty day’s), would have again except we like trying different cars.
and the Tiguan, you know what you get with vw, solid, comfortable and reliable (well my golf gte was), does what it says on the tin in my opinion, just check the boot size if you need to carry a wheelchair
good luck
adam