Despite the recent global shutter disappointment the BMMCC is still very tempting. Add in the essentials of a speedbooster and decent monitor/ EVF and it's the same sort of price range as the other cameras mentioned.
5dMk3 raw makes sense in theory but I've just never seen anything from it that really wowed me. As someone who is fairly inexperienced and hasn't played with a lot of cameras that counts for a lot. Same goes for the 1DC. The two C300 Blue movies are a couple of my faves of the last 10 years, and despite knowing it's the talent and story that really makes it, you can't help but feel swayed! Currently happy shooting Vision colour on my 6D, but don't feel like I'd miss the full-frame look and would gladly swap it for the "cinematic" motion of the BM. The 1.75x crop (I think..?) of the Speedbooster might mean rethinking my 35, 50, 85 prime lenses though, which is something that gives me pause.