So what are some of the actual feature differences between the GA6400 and GA7900 models? Is it really just the stupid 240Hz "TruMotion" option? I don't really value any of the "motion type" features, either 120 or 240, and it would be the first thing I'd turn off on any SmartTV. The only other thing I see in the technical specs, the GA7900s are slightly larger and heavier. Which I'm guessing is just from slightly different frames. Just wondering why there is such a large price difference ($700), from only one feature difference (imho a terrible one)?