There's always going to be a debate between Canon ML Capable cameras. Just get the one that fits your needs.
I've had a Canon 5D3, 5D2 (X3), Canon 6D, T3i and now an EOS M which in my opinion is my favourite out of the bunch. With the EOS M, you get the best of both worlds, Apsc & ~ Full Frame with a speed booster, a convenient form-factor, more lens choice, cinematic image, easier use of 16mm 2x anamorphic adapters etc. RAW Footage from the EOS M can look quite similar to the TRUMAN SHOW which is the type of vintage look I dig...lol.
I've had a Canon 5D3, 5D2 (X3), Canon 6D, T3i and now an EOS M which in my opinion is my favourite out of the bunch. With the EOS M, you get the best of both worlds, Apsc & ~ Full Frame with a speed booster, a convenient form-factor, more lens choice, cinematic image, easier use of 16mm 2x anamorphic adapters etc. RAW Footage from the EOS M can look quite similar to the TRUMAN SHOW which is the type of vintage look I dig...lol.