My 2 cents on the M4, I tried it for the first time this year we got over 20 fruit from 3 grafts I did 3 years ago. I was excited for coconut flavor but the only coconut I got from the M4 was aroma - there's definitely a strong hit of coconut in the aroma (once you cut it open - before that no smell at all which is really weird if the only mango you know is Haden which has a powerful, heavenly scent when ripe). But in the flavor I got citrus notes, maybe some piña colada especially near the shoulders. The flesh is sweetest at the shoulders and by the skin. Delicious mango.