I got to drive a 2005 AMG CLS55 over the summer when my Dad and his friend were too drunk to make it home from lunch...
Holy jebus. In the past two years since I sold my car, I've only driven a 21' Uhaul. a few F150s, and a Yari (not by choice--long story). In my entire life, the only thing I've driven with anything even approaching above-average performance is my mom's old Volvo S80 Turbo.
The CLS55, I can't even compare it to any other car I've ever driven. You touch the gas and the car is somehow much further down the road than it has any right being. And God is that thing comfortable.