Hi guptaisme. LG WRman Greg here!
I'm glad to be a part of this discussion regarding active and passive 3D technology. First of all, passive 3D TVs, which is the technology LG Cinema 3D TVs use, utilize very comfortable 3D glasses that feel just like regular sunglasses. From the discussion thus far, I can see that you guys are wondering which one has the better quality. Well, technically, the 3D technology doesn't have much impact on the picture quality as much as the specs of the TV does. Some people still argue that passive 3D is not full 1080p, and that's true because it's 1080i, meaning it uses interlacing technology to project 1080 lines.
If you have any more questions feel free to ask or check out the official site for more info at *www.lg.com/in/3d-tvLG.
WRman Greg out!