Frankly, I'm not certain that the average human eye is capable of discerning a clear favorite among the three world-class binos you've mentioned. The lenses and construction on all are faultless. You could probably put the Nikon EDG in that same class too.
Personal choice will almost always boil down to ergonomics--that is, how the glass feels to you when you handle it and look through it. So, if possible, you should personally test each one before making a decision.
Personally, I like Leica. Among other hunters I've been around, I would say that the preference runs to Swaro, then Leica, then Zeiss. That said, I've never met a hunter that had verbally wished he had foregone the brand he owns in favor of another.
"For every complex problem there is an answer that is clear, simple.....and wrong." H. L. Mencken