I only have a little bit of information on Maha Chanok sometimes spelled Chanok, Chinok, Chinook. It is a slow growing variety for me that is moderately disease resistant. The Mahas from San Diego can get to about 21% Brix, similar to the NDM but the NDM tastes sweeter to my palate probably because the Maha has some acidity to counter the sugars.
Smell is a big part of how a person assesses a mango and a ripe Maha smells absolutely incredible, very perfumy with floral and citrus notes. The strongest notes to me are ones of Tangerine and Maha is absolutely in my opinion one of the most beautiful mangos on the planet with its shapely curves and rainbow hues. The flavor of the Maha can be weak at times such as in the early fruit with Brix closer to 17-19%.
When eaten firm ripe, it has a wonderful Tangerine taste from the acidity which is very very mellow but definitely noticeable. At this stage, the sugars are not fully converted and the fruit is only mildly sweet. If left to fully ripen, firmness of a ripe peach, the fruit is sweet but the Tangerine flavor and acidic notes are not as noticeable. The Maha produces reliably here but most varieties do because of my relatively cold weather. My Maha is on Turpentine rootstock and is dieing back, this is the first year it hasn't had fruit in several years and I attribute it to the bad rootstock and dieback.
Edited to correct Brix, Maha gets to 21% Brix.
Simon