I'd go with the Zeiss if you're trying to shoot video, but the AF of other 2 is a bit more appealing if you're shooting stills. The look you get from the Zeiss 85 is definitely different (and not in a bad way). But at the same time the Canon 85 1.8 is a stellar lens (especially at 1/4 of the price of the Zeiss). I've never used the Sigma but have heard nothing but good things about it, so I would say that's a safe bet too.Just keep in mind that Zeiss 85 1.4 is reported to have focus shift. But I guess that is important for AF confirmation only which is programmed to report correct AF assuming an f-stop of 5.6 (if my memory serves me well).