Thw W126 is hands down the best. Just take a look. Of all the S-class bodies manufactured, it had the longest production run, W105 1956-1959 (3 yrs), W111 1959-1968 (9 yrs), W108/109 1965-1973 (8 yrs) W116 1972-1980 (8 yrs) W126 1979-1994 (15 yrs), W140, 1991-1999 (8 yrs), and W220 1998-2005 (7 yrs). The W126 looks so elegant, both classy and modern at the same time. For DIY'ers, it's probably the last of the easier MB cars to work on. The various engines available for it from the factory, from the small gas 2.6L, to the "klattering" 3.5L diesel, and the mighty 5.6L V-8s. The W126 is truly a masterpiece. The W140 and W220s look nice, but the W126 is the one in my heart.