No, not the 6D for video. Too much aliasing and moire. If it is going to be a Canon, then the 1DX is definitely the best and the 5D3 the next best. The others won't do much for you.
VAF filter for 365 is still 700 less than 5D with same video quality.
With the ML hack the 5D3 is miles better than 6D+AA filter. 6D uses slow SD cards that can't support ML RAW so well.