I finally received my Optoma BG-ZD101 glasses today.
These are a HUGE improvement over the Mits IR glasses.
The problems with loss of black and green or blue tint are GONE with these glasses.
As soon as they sync to the tv, the blacks become black. Apparently they successfully mute both lenses when the DLP-Link flash takes place.
The contrast is all there now.
Also, as others have stated, the color quality is much improved.
And, to my eyes, they render 3D effects much better- specifically things coming at you from the screen.
With the Mits glasses, the 3D effect was good with items beyond the plane of the screen, but things coming at you looked a little flickery and were hard for my eyes to focus on and get the effect. I have never had a problem perceiving 3D with any of the old or new theatrical formats, or on theme park rides- only with the Mits glasses.
The Optomas eliminate this problem for me as well- things coming at you like the pop singer on the Disney/Mits demo disc are clear, stable, with no eye strain.
I was not expecting such an improvement with these glasses, and thought I was probably wasting my money ordering them. Not so. I am very happy with the picture in 3D mode now.
The Optomas also seem to darken the overall picture less. On the "Cloudy...Meatballs" 3D blu-ray, I constantly felt like my eyes were straining to see the dark picture- even in a dark room at night, when using the Mits glasses. The light level seems notably better with the Optomas.
As far as the polarization rainbows... I do see them with the Optomas, but only on certain bright / nearly white scenes, only after looking for them for awhile, and they are very faint and not distracting to me.
If you're unhappy with the green/blue tint, lack of black level, lack of color saturation, etc. get these glasses.
Shame on Mitsubishi for designing a IR-based 3D system with DLP-LINK on all the time- but at least there is a solution.