I bought 2 pieces of the Stern glass, and after hearing how great antireflective glass is I was underwhelmed. I don’t have any experience with the other two (PDI & JJP) so can't compare. Reflections have improved compared regular glass, but are still there from the translite & DMD. Both pieces have some spotiness in the coating at certain angles where the coating wasn’t uniform.

If I had to do it over again I would have bought a ColorDMD instead for my LOTR.

Here is a pic of my two pins with the Stern invisiglass installed:

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I believe what he means is that from the angle that you are standing at the lower half playfield is where the invisiglass really looks best, as you will have no reflections there at all. I concur with Arcade's comment there....

Yep, bent plastic will be included in my next order from PBL, and I expect ColorDMD to change things as the LCD on the MMr is not an issue. The real reflection disappointment are the translites as I had expected any glare/reflection from them to go away. Like I said, an improvement over regular glass, but still underwhelmed for $450 shipped...

Correct, 2 sheets......

Looking at Stern Invisiglass with the pin off and the room lights on it will have a purplish hue to it if you look at it from an angle, very similar to eyeglasses that have anti-glare coatings applied to them.