It's great to read the comparisons, but wanted to add another aspect to glare.
For my video projects I use costly cine lenses and glass filters/polarizers (where a 4" by 4" piece if glass costs well over $200) I am highly attuned to glare.
On location, I have definitely noticed a difference between JJP non glare and regular glass, and planned to get some for my TAF.
However before I did that, I ordered a Pinstadium since TAF is a rather dark machine.
With the lighting on, I was shocked how much glare went away because there was now more light exiting from inside the machine then entering.
It was such a reduction I no longer wanted new glass, and at some angles even my old regular glass seems to disappear.
This is on a color DMD machine, and not one with a huge bright LCD, which is bound to produce more glare.
So I would say on an older darker machine consider lighting before glass.
Has anyone tried using a polarizing filter on a large LCD? That may be enough to knock down reflections, but limit viewing angle of LCD.