I have this TV for 2 years now and my back can only be positive. Very good TV with a correct 3D effect. It is a passive 3D (with glasses without batteries like the movies). Another plus, it comes with 5 pairs of glasses. The colors are gorgeous and I had no electronic worry. I plug my external hard drive to watch movies, TV and the bed almost all video formats !!
Only negative (in my opinion) is the poor sound quality. Anyway it does not have any problem because I always connected my TV to a home theater kit.