I agree with John here,
But for me I love the W124 Chassis, and I love the look of the 94-95 E320/E420/E500/E320 coupe/E320 Convertible/E320 Wagons.
I think you would be very happy with any of the cars john mentioned, but my personal tastes would lean towards the above mentioned W124 Chassis cars.
There is something about the look of a W124, that is just timeless to me.
Then again mercedes car styling has always been several years ahead of its time.