The past five years or so the colour of the Hase 'in-house' decals has improved and white is now truely white and not cream. They also seem to be a bit thinner than the older decals. But Cartograf is preferable :-)
I know they have different arming keys; in the L the arming key is turned and removed while the arming key of the M stays with the missile. So when not modelled in flight no real external differences I believe.