Downsides:
Well yes; as an OLED its susceptible to burn under extreme circumstances so if for example you watch the same tv channel every single day all day for months and months and months on end, ultimately you could see a little bit of image retention or screen burn-in happen. The Sony TV does have some stuff that helps try to abate that but at the end of the day if you abuse the TV with hardcore viewing like that u might get a little bit of burn in and this TV might not be for you in that case.
But for pretty much everybody else if you are looking for the best picture quality that you can find the Sony A9G is offering it now.
Is it the best TV I’ve ever seen? Well there is the 8K OLED from LG that is really fantastic but I am comfortable calling this the best 4K TV I’ve seen so far and it gets me excited where TV technology is going future.
Anything which can make this TV better? I would say if it was more in use of gamers, then it would just be no words to describe it. It doesn’t have the HDMI 2.1 speck. It does the EARC so you get the uncompressed dolby atmos and with newer EARC audio equipment you wont have any latency with like a sound bar or anything like that but the refresh rates aren’t great but still compatible that’s why it wouldn’t be recommended for gaming as there are better options in the market in that case.
Are they expensive TVs?? Absolutely but the picture quality you get for the price I think is magnificent.