After owning a set of these for about 6 months my suggestion would be to find something else.
Imo they are not true sounding at ALL and they aren't a speaker that you can really learn with because everything just sounds like M1's and not the way it really sounds.
In the past I have had NS10's, Events, KRK's and KEF and I had no problem learning the sound of those but these things are just junk to me. They sound pretty good for listening to CD's though ;-)