For me, the LZ has been extremely non-precocious (not sure that the antonym of precocious is :-). Cold (ie, stress) will induce precocity though. I'm just barely getting a crop on my oldest LZ trees, which were planted in 2011 ... ;-).
Coco cream started producing very early on, but I don't think a mango tree will really show what it's capable of until it's mature. So, I hold off on evaluation until a tree is 6+ years old.
Both my Coconut Cream and Lemon Zest mango trees will have been in ground 4 years this summer. They are planted adjacent to one another and were planted on the same day. My experience with the two trees has been quite different in regards to growth habit and production.
Both trees have been strong growers, adding a nice amount of canopy size and trunk thickness over the 3 1/2 year period in the ground. As others have stated, there is a stark contrast in growth habit. The LZ is an upright grower, and the first 2 years in the ground I tipped it every flush or two. The CC has a very "weeping" habit, and I have removed branches many times in an attempt to keep it off of the ground. Almost the exact opposite pruning method with this tree when compared to other mango trees. Keep the vertical growth, and remove the lateral or downward growth. It was a struggle to get the canopy up.
Last season, My LZ turned into a machine, bringing 30 or more fruit to maturity. Very nice haul for a 3 year old tree. The load was large enough to keep that vertical habit in check, and I did not prune it at all. This year, it is loaded up with a strong load of fruit which set in 2 waves. It is now flowering again on any remaining terminals that had not yet set. It is looking to be a banner year for a tree that will be in ground only 4 years this summer. Fantastic tree.
Last season My CC flowered well, but only set 3 fruit. Of those 3, only 1 survived the lawn man's assault via mower. Disappointing especially when compared to the LZ, but it is still a young tree, so no big deal, it needs time. This year the set seems to be much improved. It's still early and there are plenty of flowers just now pushing. Another interesting note is that a young/tebow ( 5 years in ground) tree that I top worked with CC ( directly adjacent to these two) has a very nice CC fruit set. 10 or so golf ball sized CC's, a bunch of pencil eraser sized, and any remaining terminal branch is pushing flowers.
Anyway, thats how the two compare in my yard.
