There is only one way to Speak Horse, and all 3 men have mastered this. Speaking horse is speaking horse, regardless of what trainer you follow.
I choose to not pick favorites. They all have their strong points and bad points. I agree with things, and I disagree with things.
It is up to us to choose what we want to take from all of them, and discard what we don't.
They all speak horse, they just have their own ways of reaching the grand goal.