May experience is that some times it the fruit stays too long on the tree the flavor begins to deteriorate. I can thing of a Guatemalan seedling that stays in the tree to March but is best in December.
Also my experience on fruit that turns color is to pick before that color change takes place because at that point post harvest pathogens take hold and is harder to eat clean fruit. As it is with some of the Hass varieties in South Florida if you wait to pick after the turn color usually I can not eat them from anthracnose or similar.
To add to the confusion , every year is different by a week or two and by unknown variables e.i. This year my early Donis were delicious, very enjoyable. This year my Pollock did not set any fruit,,,,,, and so on.