my personal fav is the 280SL that's within my reach. the older i get the more i like classics.
i also like the last gen's facelifted SL, but the new one is quite stunning at night. i was walking with gf at night and the new SL rolled by, the sound and the lights are something to remember.
Future mod consideration: exhaust, pulley
otherwise, very happy with how the m3 was born