I would only recommend going to see as many different sets as possible and to prioritize the features that matter most in you application. For instance, is rarely sitting off axis and or seldom having family/friends sitting off axis, I would definitely go with a VA panel as contrast ration and black level tend to be far superior.Been checking out motion blur and input lag figures on Rtings and I really like the look of the LG UK6570 but the 70" has a VA panel unlike the rest, that has IPS.
Am I wrong to think the motion blur and input lag figures for the VA panel could be completely different?
As for Rtings, do bear in mind the results that folks like like humblebrag about are in Game Mode where most all picture enhancements and even local dimming are turned off. For instance, on Sony's flagship Z Series the newest F series has much lower lag. However, outside of Game Mode the results are often a toss up with some favoring the prior flagship Z9D.