I suppose the security of the two year warranty.
FWIW, I recently needed to buy an additional colour digital M and bought a new M-E instead of an ex-demo M240 which was offered to me. The M9 might now be more than four years old but it still does everything I want from a camera in this class and I felt no need to spend the (modest) extra to obtain the M240.
FWIW, I recently needed to buy an additional colour digital M and bought a new M-E instead of an ex-demo M240 which was offered to me. The M9 might now be more than four years old but it still does everything I want from a camera in this class and I felt no need to spend the (modest) extra to obtain the M240.