Originally Posted by Kalani
I own both the Sony Playstation 3D glasses and the 3rd Gen Panasonic glasses.
3D performance is the same. No detectable difference between the two when watching content. The Panasonics seem a hair less dark when you're looking directly at the lenses, but once they're on your face and the TV is playing a show, you can't tell the difference, visually... both are excellent.
The Panny's are a LOT lighter and thus more comfortable to wear for an extended time. My wife has a tiny face and was complaining a little towards the end of a movie with the Sony's. She was willing to watch another 3D movie (at another time, after having some time to rest between), so not the end of the world, but she's MUCH happier with the Panasonic 3rd Gen glasses. Bear this in mind if you're planning to buy for a child... they may feel more like she did than me. The weight of the Sony's didn't bother me, as a large guy, but I still noticed the Panny's were more comfortable, to be sure. When we have viewing parties I give my wife the Pannys, and I give my guests first pick of the Sony vs. the remaining Panasonic.
Medium Panny's fit both of us just fine, over our prescription glasses. Same for the PS3 glasses.
There are minor differences between the two, but nothing to write home about. (longer charging cable on the Pannys, soft case on the Sony vs. no case on the Panny, stuff like that) But the above is the most important info.
The Sony's are cheap, just over $50 ATM on Amazon, and readily available... I think I saw them for full retail price ($70) at BestBuy if you need a pair NOW. The Panny's are hard to find and getting harder.
The SainSonic's are supposedly quite comfortable, but users have reported a slight green tint that is actually noticeable while watching through them. The Xpands also showed a color shift that neither the Panasonics nor the Sony's showed.
At this time, I wouldn't bother with anything other than Panasonic or Sony, depending on what you can find, afford, and what fits you.
I've love an extra couple Panny glasses just so we can invite more than two people over for 3D viewing parties, but I doubt I'll want to spend that much on others, so when I get around to it, I'll probably pick up a couple more of the Sony's.