I've got M1MKII's,too. What I don't like on this speakers is that they can sound too bassy. Hand in hand with it you have to monitor more loudly to hear all the freq spectrum,properly,. and then your ears feels the fatigue much earlier. or at least mine do so.

I am thinking of sell them and buy some new,. I will probably choose between Adam A7, Dynaudio BM5A,, or Mackie HR624. will see..