So i bought my parents a Panasonic Viera TX-48CX400 4K Smart TV but i found out about HDR later after i got it. Is HDR really worth it though? i paid only 499,99 euro for this TV, it was on sale and sold out a day after. Few Youtube video's at 4K stutter but most are smooth, not sure if TV is at fault. Has a pretty old OS on it as well and not as fast as i hoped for. Picture quality is great though, blacks are deep and colors pop but have yet to calibrate it. One thing i noticed is the backlight in the corners can be seen noticeable but not extreme. There aren't many options for a little more money, i'd have to pay like 150-200 euro extra if i want a more decent 4K TV.