Gotta be Breath of the Wild, for me. Taken together with Tears of the Kingdom, the series’ storytelling and immersion has never been better, I think, and as a game, Breath of the Wild was the tighter, more-satisfying experience, overall.
Wind Waker is a veeerrrrrrry close second. I think it’s the most-polished entry in the whole series, in both categories. I’m really not sure what I would change, if given the chance.