Each one is special in its own way. S1E1 with the conversion of Mary all the way to the healing of the paralytic at the pool of Bethsaida. Many times I have cried and that's not usual for me. I don't think I have a favorite yet.
In hindsight, it's clear that the series' format has its own logic: essentially, each Chosen disciple (plus Nico) gets an episode, more or less. That will hold true just once more, by my reckoning.
I am one of those people who enjoys admiring not merely the work itself but also its maker and his process--my wife is the complete opposite, so we never discuss that. So, having divined the format so far, now I wonder what will follow. I'm in suspense.