m22 is great! i have them and i love them. they are crystal clear, handles the midrange extremely well, detailed detailed detailed, the highs are just right (only times they become overbearing is if the source is recorded badly), the bass is fine - but incorporate a sub in the system and you have got yourself an excellent two channel system!
the m3s, according to what i have heard, read, and through my conversationg with alan lofft, axiom afficionado, has a slight bump in the mid bass region - thus making it a little bit more "bassy" than the m22s but at the same time, lacks the midrange clarity of the m22s.
my .02.
