Ambivalent thing with the active glasses ...

The visual impression seems flawlessly (have been about 35 to 40 films seen); the TX-P65VT50E.
The ability to load via USB is naturally perfect (no one wants to pay every few hours with a new battery and hineinfitzeln)! The operating time is very good (3D you do not look so permanent).
The synchronization with the TV goes well by itself (we see up to 4 glasses).

What I like are less price stability and the glasses!
When price everyone has to decide for themselves - clear. I also do not say more: they got me so anyway ordered ...
The stability in my opinion is borderline low.
Already when you open the bracket for mounting should not proceed to exploratory one: here you can see the weak hinges already offending.
When asleep film (yes, such things happen and from :-) I would advise anyone also because then the risk of causing that one twists or breaks something.

I would buy the glasses back as an important point for me "instead of USB battery" and I'm someone who is already on his stuff Eight (which goes in this one case, unfortunately, so far that I have to ask each co-seer to be careful ...).

Have fun if you take advantage of these things!