I think the W210 is a little more of a driver's car than the W211. The W211 has things such as overboosted rack and pinion steering and sensotronic brakes (which I don't care much for).

Go with the E55, you probably won't be disappointed.

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Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record