Here's a recap:
Pre-2010 Mitsubishi 3D DLP TV's do not work well with one category of active 3D glasses-including the glasses that come with the Mitsubishi 3D kit.
There are two technologies for synching active glasses to the display.
One uses an infrared transmitter, or emitter, to communicate with the glasses. The other is called DLP-Link. DLP-Link requires no transmitter. Instead, the tv screen flashes white between each left and right eye signal, which tells DLP-Link glasses to switch eyes.
When using no glasses, or when using IR-sync glasses, the dlp-link flash is noticeable as a washed out picture- blacks and dark areas are whitish-blue or whitish-green.
DLP-Link glasses turn both eyes off during the flash, so you can't see the flash when the glasses are on.
IR glasses don't know a thing about the DLP-Link flash, and therefore do not mute it.
If you use IR glasses with DLP-link enabled, the picture quality will be degraded in terms of black level, color saturation, color accuracy, and dark detail.
The problem is, on the pre-2010 mitsubishi sets, there is no way to turn off DLP-Link.
The solution is, use DLP-Link glasses instead of IR glasses on pre-2010 models.
The 2010 models have a menu option to toggle the TV between IR-Shutter mode and DLP-Link mode. So with a 2010 set, you can use either as long as you set the tv menu correctly.
Mitsubishi's 3DC-1000 kit comes with IR shutter glasses.
So, if you have a 2009 or earlier DLP 3D set, you are much better off buying the adapter only (to convert blu-ray 3D to the checkerboard 3D system used in DLP sets) for $100 instead of the full kit, and separately ordering DLP-Link glasses.
You will spend less money total and have a much better picture.
From what I gather from posts on these forums, the Optomas are a bit better than the Xpand DLP-Link glasses. I can only vouch personally for the Optomas, which I find excellent in terms of image quality.
$81 from projectorzone.com for the Optomas, and the 3D adapter is $100.
So, for a pair of glasses and the adapter, you are at $262 and you have a much better picture on pre-2010 models than the $399 mitsubishi starter kit.