The 2008 Mercedes-Benz CLK550, while very enjoyable to drive, suffers from older cabin electronics. It has more than enough power and good performance characteristics, but for this kind of money we would get something more up to date.
Mercedes-Benz puts its powerful 5.5-liter V-8 and seven-speed automatic in the CLK-class, also chopping the top to make a Cabriolet version.
The CLK550 uses Mercedes-Benz's seven-speed automatic transmission, with a manual gear selection mode. You can select gears by moving the shifter from side-to-side, or with the steering wheel mounted paddle shifters. There is also a button near the shifter that sets the suspension to Comfort or Sport mode.