If you are going to pay 2k, find a 2000 to 2002. They pop up at this price.
The AWD versions are more expensive and more difficult to work on. If you do not need the AWD, get a regular one.
Here in the west we do not really have any rust issues..
For you East-Coast guys, rust is a issue, and you can find cosmetic issues, yet the critical rust issue on the W210 is front spring perch issue..Take a look at post 62, and the AWD's do not have this issue.
W210 Diesel owners: Spring Perch Failure - Please read
Get a 2000 to 2002 to avoid having a K2 bearing failure in the transmission . If you are looking, and find some super deal on a car. You hear this gear sound/ whine...run, do not walk...K2 bearing failure??
Martin