Okay, so I am going to be getting a 3D tv soon and am trying to decide which glasses I want, the $20 Samsung 4100's or the $50 ER3D4MU. Anecdotal evidence shows that the Panasonic glasses are more comfy and may offer better PQ. However, there is one feature that intrigues me. An employee at a local big box store told me (and one review on Amazon seems to corroborate) that these glasses have a 2D mode. In essence the shutters open and shut together instead of opposite each other so both your eyes see the same image and you see the 3D content in 2D. This may seem silly at first, but it would be of tremendous value to me. I love 3D movies and watch them at every chance I get, but my wife prefers good old fashioned 2D, so if these glasses truly have a 2D mode, they are worth more than the $30 price difference to me, as they will help defuse future arguments. Can anyone who owns these glasses confirm or refute the presence of this feature?