I read the Rtings review for the new 2015 Vizio M and Samsung JU7100 55" 4K TV's. They both scored pretty similarly, save for motion blur, of which the Samsung had a significant advantage. Is the Sammy really worth the extra $700 over the Vizio M? There has to be something else I'm getting other than the better motion blur. And if I'm not, is it THAT much better for playing video games to make it 70% more expensive???