Tree is a compact, or at least a slow grower...fruit is mediocre at best. It is more of a novelty issue to produce the big "fruit" as opposed to growing for quality fruit. If you want to grow 5+ pound mangoes, than Lancetilla ids a tree for you. If you want to grow quality, good tasting mangoes, pass this variety by...
The description from Fairchild doesn't sound so mediocre to me:
"‘Lancetilla’ This impressive mango comes from the north coast of Honduras. The fruit are quite large, ranging from two to five pounds. The thick skin, bright red color with radiant, crimson on the shoulders is tolerant of rough handling and is easily separated from the firm, juicy lemon-yellow flesh.
The fiberless flesh is aromatic and has an intensely sweet, flavor. The fruit ripen from mid-August through September, almost the end of the mango season in South Florida. With branch tipping and selective pruning, it can be formed into a small, productive ten-foot tree. ‘Lancetilla,’ with its excellent disease tolerance, is the perfect late season mango, offering beauty, compact size and flavor."
Neither does PIN's description make it sound mediocre:
"Lancetilla is a Honduran selection made famous by Dr. Richard Campbell. Its debut at the 2001 International Mango Festival at Fairchild Tropical Botanical Gardens made it an instant South Florida sensation. Its immediate acceptance by homeowners can be attributed to the tree’s ability to be maintained at just ten feet. The five pound blood red fruit is firm, sweet, and completely fiberless. The fruit ripens from mid August to September."
This is definitely one I would like to try for myself at peak ripeness...