I have 86K miles on my 1995 E320 and I have not had any other maintenance problems, except the expansion valve in the AC system. So far, I have not had problems with the head gasket, wiring harness, or the evaporator. I did struggle a bit getting everything straightened out after I added the Eibach lowering springs, Bilstein HD shocks, and the K-MAC bushings, but I have not had problems that I can attribute to the OEM products. The aftermarket products I purchased are good, but they did require some fine-tuning to get the set-up “tuned” to my liking. Oh yes, I did have to replace the oxygen sensor.
I have had my car serviced at the dealer, except for the addition of the aftermarket suspension products. I have owned the car for 8 years and I am planning to keep it for the rest of my life. I am only 49-years-old, so I hope that is a very long time.
I love my car.
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I just couldn't give up on my 1995 E320.

I think it might be like always going back to that same bad relationship with an ex girlfriend.
You feel you love them too much, or you are just too stupid to know any better.
Flickr slideshow of my 1995 E320
http://www.flickr.com/photos/24145497@N06/sets/72157616572140057/