Just got my 2 pairs of the latest glasses from 3dtv corp:
I also own the old, bulky version from 3dtv corp as well as a pair from Trudepth. All I can say is that these new glasses are the best 3d glasses I've ever owned. They are ultra light, comfortable, resembling real glasses more than the average pair of 3d glasses. If you thought the other two glasses I mentioned blocked the red flash effectively, you are in for a real surprise. Once you put on these new glasses, those other two will obviously show red in an all black screen. The new glasses COMPLETELY block out the red flash.
Another benefit is that turning your head doesn't result in any noticeable color shifting like many other glasses do.
The one interesting negative of these glasses is that some ghosting is a little more noticeable (primarily thin bright lines against a dark background). The positive part is that the other glasses had ghosting in the same scenes but weren't as noticeable because the contrast is lower on them. In other words the contrast on these new glasses do appear higher than the old 3dtv corps. Also, I didn't experience any sync issues.
I highly recommend these glasses. From now on, there should be no excuse for any manufacture to make big, bulky and uncomfortable 3d glasses. Maybe if these came around sooner, less people would be so turned off by wearing 3d glasses.