From what i remember the normal matrix wasnt your cup of tea, even though there are considerable differences, the DM4 is relativly the same marker as a dm3.
Althogh imo the nerve isn't all what its cracked up to be. for instance ive seen a few funny things with the pin
both markers are real fast, the nerve is a touch lighter and some say the DM4 feels top heavy
But then again youve probably heard this numberous times before - if your gonna splash out huge amounts of cash on a gun - i'd see them in living colour and shoot them before hand