Vladimir, we also own a ML55 AMG as a family car and I can tell you one thing for sure: there is a difference like
day and night between the ML55 and the Cayenne Turbo.
The Cayenne Turbo drives almost like a high power limousine, unbelievable for such a heavy weight SUV.
Before I bought my E55 (I sold my Porsche 996 Turbo due to family reasons...two kids, no time for fun
), I actually wanted to buy the Cayenne Turbo but my Porsche dealer (actually the salesman) didn't take me too serious that I would switch to Mercedes and therefore he didn't make me a good enough offer for my 996 Turbo. So I went and bought a E55 to have some fun
and room for moving the family but my first choice has been the Cayenne Turbo.
I'm very happy with my E55 but the ML55 started to suck.
It is still a very fast SUV (faster than the Cayenne S...at least on the straight line *LOL*) but when it comes to corners, I hate the ML55 because it requires a lot of attention and driver sensibility to be very fast.
If you go for the Cayenne Turbo, you won't regret it.
