Received mine yesterday.
My first impressions are very positives.
I play thru the presets and i have to say that some of them are really impressive and well programmed. ( i'm not a "perdreau de l'année" wich means in french that i'm not a bird of the year ( 40 years of synth programmation) ).
The programmation of the beast is not obvious because of all the parameters wich can interfered and some of them are very sensitive.
I have a pretty big modular system and i try to communicate with it, piece of cake.
The only default i find for now is that the midi command center doesn't function on my music dedicate computer with windows7, but i managed to use it on a laptop with Windows 10. I suspect that the problem is because i use copperlan on my music computer wich perhaps make a conflict. ( not sure ). The midi command center saw that there is a matrix brute connected but failed to connect to it.
I also own a Sub37 and i can't figure a sound on it i couldn't reproduice on the matrixbrute and NO, i don't want to sell my sub37 because i love it.