Asked Alex @ TAF for Top 5 mangoes for SoCal, and he recommended Sweet Tart, peach cobbler, Cac, Cotton Candy and to consider "Sunrise" for SoCal location on manila root stock. Never tasted Sunrise but other 4 are excellent tasting Mangoes. Sad that Lemon zest cannot make it to top 5.
I can vouch for Sweet Tart, Cac, Peach Cobbler and Cotton Candy. They grow well and will set fruit even with Powdery Mildew. I’m not growing Sunrise but a friend is and his tree is growing well last I heard.
Lemon Zest is one of my favorite mangos but the Powdery Mildew severely inhibits fruit set and the PM also causes the new growth flushes to get distorted in shape. For those that can spray with sulfur every 7-10 days, pre bloom to fruit set, you can still get a good harvest from Lemon Zest. Also, for those living in an area with good air circulation such as at the top of a hill, you can get good fruit set without spraying.
Simon
I have heard LZ has issue with PM, so I spray 4x.
It's on my multi-grafted tree (15+ year old) grafted 2 years ago and it's full of fruits. Very vigorous variety.
Sweet Tart, Maha, CHL, Keo Savoy seems clean and fruiting well. KS is a heavy producer.