yes all 3 are the same monitors and all 3 are setup with eyefinity triangle formation at 1920 x 1080 and they work wonderfully .
I can confirm having to reset the mixer from M1 to M3 and reactive the control room on the mixer but once saved it has remained that way but ive also setup 2 workspaces 1 setting the vsti on M2 and the mixer on M3 and saved the project and repeated visa versa and both were remembered with no hassles 