I haven't yet, but plan on soon.
Here's what I've learned of Passive vs. Active displays.
Passive: Uses cheaper glasses. Cuts your resolution in half. Uses half the resolution for the left eye and the other half for the right eye. This would be better when tv's go to 4k resolution, instead of 1080.
Active: Glasses cost more and have to be recharged. You don't lose resolution. The TV communicates to the glasses to synchronize the blackening out of the lenses in an alternate fashion. The tv very rapidly displays what is meant for only the left eye, while the glasses right eye is blackened out. Then reverses the process for the other eye. Happens so fast, you don't notice anything odd about it.
I'd like to compare the different displays somewhere, but every time I go to a local BB store, the glasses are either missing or torn up.
