Passive 3D has an additional benefit that your kids will like... full screen split-screen gaming.
What I mean by that is Johnny and Timmy can play a split-screen game, turn on 3D 'Top-Bottom' or 'Side-by-Side' depending on how the game shows split-screen play, and by using
LG Dual-Play glasses or similar, they can play against each other full screen. Pretty neat.