Yes, Maha Chanok is a very good tasting mango, one of my favorites in most years. The tree also has desirable characteristics: it's relatively small and disease resistant.
That particular maha appears to have been picked TOO LATE (ie, allowed to ripen on the tree). The reason I say that is because I can note some jelly seed. If you look closely, you'll note the darker flesh right next to the seed. This year, I had to pick mine mature green to avoid the jelly seed. For some reason, this year was worse than others for internal breakdown issues on a number of mangoes.
Also, that Maha Chanok is overripe for my own taste preference. The fruit is completely yellow, and there are a couple of post harvest anthracnose spots forming. I would have eaten it 2 - 3 days earlier. At that fully ripe stage, the fruit is mostly just sweet. Eaten a little less underripe, the maha has 2 characteristics that I enjoy: some tart and the south east asian spice (I call it coca cola flavor).