This year, my earliest fruiting cultivar was Redland, I picked two fruits on October 4. I greatly disliked Redland fruits. They have some very unpleasant medicinal flavor. I tasted the same flavor in the fruits collected from a friend's tree a couple of weeks later.
On October 30, I harvested a few fruits of Delta Gold (earlier known as Harvey B3, picture below). These turned out to be excellent fruits. They have a very pleasant intense creamy caramel flavor with thick, but not bitter skin.
On November 4 and 5, I harvested more of Delta Gold and four additional cultivars, see the pictures and descriptions below. These five cultivars are all good to excellent and definitely worth growing. I don't want to give exact scores as these would be based on a few fruits from single trees or grafts.
The skin is bitter. More intense than Vernon. Sweet caramel with a hint of lemon.
The skin is not bitter. Very soft sweet melting flesh with a hint of acidity.