NEVER buy a car that you don't really want, especially an inexpensive car like the M3.
WAIT (and save, if that would help too) for what you want.
My 2 cents.
Present: 2013 M3 coupe (Azurite Black, Black, Piano Black)
Past: 2010 335i coupe (Monaco Blue, Cream Beige, Grey Poplar)
+ miata nut (2004 GT/LS and 2013 GS/Club Edition)