No Glen for me -- just bland tasting.
Gotta speak up, because this is just not true for everyone, or probably anyone with a few trees ("bottom tier"). Glenn has been the most productive and consistent of my trees. Fruit is good, sometimes very good. Clean, fiberless, juicy, and sweet. Has peachy aroma and taste as well. Not complex enough, I will admit. But still a really good mango when grown right.
I've had bland Glenns, probably were hit with nitrogen or grown up north (anywhere north of Miami; don't know how ya'll can stand the cold!).
My sense is Glenn does better down here south of Miami, and likes limestone soil, and no nitrogen.
My Glenns are quite nice, sweet and peachy.
I don't doubt that other people grow crappy or subpar Glenns.
Its the perfect mango for my wife and youngest kid, wouldn't dream of chopping it.
Will start breakfast with a Glenn, then a coffee, and will go from there...