its not necessarily the DIN setting. IMO its the whole binding. ive seen so many of those things just thrashed to pieces. IMO its more about how hard you are going to ski them..
i actually just bought my 8 year old sister some of the M11s, but then again she isnt exactly heavy, and already rides a 2.75 din and she wont be using them until next year.
if they work for you thats great, but you really get what you pay for, hopefully they dont explode on you. haha