The LG G4 83" looks amazing on all content I have thrown at it, as long as I have the motion smoothing stuff turned off and Film maker mode selected, in that mode I have never felt the need to get it professionally calibrated or invest in a calibration device myself, which I am thinking about for the Monitor I use for work. I'm not really a fan of the inbuilt OS but don't really use that anyway. I mainly stream using a PS5 through a Marantz CINEMA 70s, and this is the only gripe I really have with this TV and I don't actually think it is fully or even mainly the TVs fault, but switching inputs on the Marantz can sometimes not find a signal even if sound is coming out the speakers. I cant say 100% but it only seems to be when switching to the PS5 that there is a problem and I need to turn the TV and Receiver off and on again and sometimes use the TVs switching rather than the Receivers to get the signal displayed. My guess is a PS5 HDMI CEC bug maybe some incompatibility between that and the Marantz. I guess the only other detractor is the price, whilst I see the value for me I can also see others not having the same point of view.