Best coach depends on your criteria.
How do you define "best?"
Or better yet, how do you define greatness?"
If it's W-L record or number of SB rings that's easy - too easy, or you wouldn't have raised the topic. Count the numbers, disregard other factors.
Not trying to be a nit-picking pedant here, but tell us your yardsticks, or some of them, so we can apply them.
Waiting for your reply and what others on the board have to say.
