In the ~49" (48~50) size bracket the best purchase is the Samsung KS8000, Vizio's P50-C1 is nice too. More affordable options would be Vizio's M50-D1 or Sony's 49" X800D. The 50" KU6300 is OK too.
Again all VA, and for a reason. IPS literally sucks at black levels and don't think that edge-lit local dimming is going to help that much when something bright needs to be placed in a dark picture.
You'll only end up seeing a gracious bright rectangle in the middle of your display going from one side to the other... they're usually fine in bright environments but if you enjoy watching content during the night with lights off then just don't go with IPS, it's only an okay experience when we're talking about FALD displays and there's only a single FALD IPS anyway.
LG is the only company manufacturing IPS displays for televisions and mostly the single vendor selling them, it doesn't provide you the best viewing experience for content watching but it doesn't matter for them, their high-end line concerned about quality is their OLED line. Which are arguably the best current sets you can buy nowadays.