In reply to iamaclimber:
In my experience, I would go along with the Winter ML as the "hardest" in terms of combined phsysical and mental effort (going out for three days and two nights, snowholing and night-time navigating in the winter is tough both mentally and physically)
MIC was "hard" in so far as it was an amalgamation of the three previous awards, put together, and more! I also found the self administered stress of it being the end of a metaphorical journey was "hard". Physically I found the MIC pretty easy as you get to have a nice hot shower at the end of the day, chill out, have some proper food and sleep in a proper bed for the whole course, plus it is only a four day assessment.
Post edited at 16:51