Watch out for the build quality. this is a real issue. My brother bought the M3 73 keys last week and called me to come and demo it. In the 30 minutes it took me to get to his home the keyboard completely failed. No power . no boot up no lights nothing !!! He returned it the next day and bought the Motix XS the next day .

I never even got a chance to play one key on the M3 and there have also been problems loading the latest expansion upgrade on the M3. Just be aware that there are still major teething issues with this board. Also the keyboard is extremely light and its underside is completely exposed for the Radias board to be inserted.I would be very wary about gigging with this keyboard.