I'm looking to get a replacement for my current '95, Petrol, E320 Avante Garde Estate, 135K (offers? ), and I'm looking at something very similar just newer - probably around a 06-07 plate. I already know the appx spec I'm looking for(based on 280 or 320 prob), but I have a basic question.... Can anyone point me at a good post/page that explains the history of the various revisions of the E-Class 320 Estates from say 04-05 onwards? I want to familiarise myself with; - When new versions were released (around and either side of 06-07)? - What the changes were? - Are there any good and bad revision versions? - Are there any known problems/things to look out for, with the new versions? - What are the W nomenclature all about and again how do they relate to the period I'm interested in. I appreciate this is a large question, but I want to try and make my purchase based on knowledge rather than a shot in the dark. Many thanks.