Your dilemma is still the same as in case of w204 you were considering.
You can get a w211 for as cheap as 20 to max 50 lacs
I did my research few years back on this particular model.
What was advised to me was
1) never opt for diesel one
2) E200 is the best
3) No doubt E320 is faster but someone the e200 is better in driving feel.
4) Dont buy earlier versions as they have dodgy electronic problems
5) if you want a good one cough up 40lacs :D.
Requirement was pretty similar w211 black avantgrand spec.