I just got a pair of these this week an spent some time last night directly comparing them with my optomas that are also dlp link.
I have a mitsu 838 model and use a ps3 to play 3D.
I don't know if other people are having the same problem as I am, but when I first try and connect via dlp link, it doesn't work or hold every single time. This is after I put in the disc, turn the tv to automatic, dlplink, reverse, and turn the glasses on at the appropriate time.
BUT this problem is easily solved if I change to a different input for 2 seconds and then back to the ps3. It works every time and the dlp link holds after that without dropping. I wonder if others have this same issue and the same fix would help them.
Once this is all done, I can play 3d with both sets in pretty much a bright room (though why i would i don't know). i didn't have any issue with losing sync on the clears (or the optomas). They are VERY light and I think more comfortable than the optomas. I looked for rainbows (on despicable me) and didn't see any. also no drops with turning head unless I turn completely around.
The plastic is pretty flimsy and i wonder how they'll hold up the first time my child sits on them. On that note, they were small enough that my 5 and 8 year old children could wear them. They do cover glasses as well but not with as much room as the optomas. Because of their smaller size, I noticed the overhead lights more when on than I did with the optomas so if you plan on watching/playing games in bright overhead much these may not be the glasses for you.
Picture quality..... brilliant and clear and seems to be true to color. I had the impression that possibly the optomas were slightly brighter/crisp in color but couldn't say positively. I went back and forth many many times on different scenes and in the end I decided it was close enough that it didn't matter.
I went ahead and ordered 2 more pair. Will still want to try out the new xpand 104s maybe when they come out (if not too expensive), and am tempted to splurge on a pair of those crystaleyes, but I don't think I need to.
In the end, I feel like these may be the monoprice of glasses and show how much we are getting ripped on other brands. I'll post again if I have problems with the other sets when they get in.