20 years is too darn short. Some of the best MBs came in the 1960s and 1970s. It also hard to rank them, since they were all special in their own way. Among my favorites are: (1) 179-1980 450SL: can you say indestructible? (2) 1971-1972 300SEL 6.3, (3) 1972 600 SWB, (4) 1971 280SL, (5) 1985 300TDT , (6) 1981-1985 300SD, (7) 1991 560SEL/SEC, (8) 1995 E320 (sedan, wagon and coupe), (9) 1993-1999 w140 S500, (10) 2004 CL600.