I forgot to say that I wouldn't recommend replacing the coil wires because they just don't wear out.
If you do, only buy original MB wires with the star logo on it because they are made of solid copper.
Aftermarket wires, even Bosch, are much cheaper but are not worth it as they are made of a copper / silicone blend and will wear out.
You get what you pay for.
2001 E430, Bourdeaux Red, Oyster interior.
1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".