I did not intend to write a review, but for such expensive purchases, I think it is necessary to help future buyers. Informally, I come from a 29-inch LG TV from the past decade (non-smart) and I wanted it for my PS4 Pro, movies/series (Netflix and from a hard drive), as well as daily channels (mainly news and the occasional movie). In short:
PICTURE => Almost impeccable. It does a great job with upscaling on the terrestrial HD channels from Digea, but everything depends on the source. If we're talking about news, the picture is okay. If we're talking about a high-quality movie on Star, it's very good. Netflix, YouTube, etc. that provide 4K HDR content, it's flawless. And if we're talking about the PS4 Pro, it's flawless and impressive. Yes, it doesn't have the immense brightness of some very expensive models that I have not seen live, but in my bright living room, the difference from before is significant and I don't feel like I'm missing anything. The colors are beautiful, the black is almost perfect for my use (I lowered it from 50 to 45-46, I think), and the viewing angles are problem-free. Especially if you're coming from an old SDR TV, the difference is chaotic. From the available modes, choose Standard for regular broadcasts, Movie for movies and period series, HDR for internet sources, and Games for consoles (I didn't notice any noticeable lag) and you're covered. I haven't noticed any light bleeding or banding.
SOUND => Satisfactory only for use with regular channels. For movies/gaming, etc., you will need external sound. I have two very good Edifier bookshelf speakers permanently connected to it, and they are perfect for every use. At first, I connected them with an optical cable, but you can't control the volume with the remote, so I switched to an RCA-to-mini jack connection, turned them up a bit (because the mini jack provides less power - luckily the speakers are good and I don't have any distortions), and everything is fine and controllable from the remote. The only substantial complaint is that out-of-the-box, the terrestrial channels had noticeable audio desynchronization, so I had to play around with the (fortunately available for all sources) delay setting and that fixed it.
MENU/OPERATING SYSTEM => Be careful, it is not Android TV, but Google TV. I didn't even know there was a distinction, the latter being newer and tending to replace the former, so Google it for the differences. Overall, it has a lot of settings, I don't feel like anything is missing except for one IMPORTANT exception (which my humble 7-year-old LG stupid TV had): it doesn't have the ability to wake up automatically! You can't tell it "open at 7 in the morning" or "open when this show starts" - I consider it a huge and inexplicable omission for the most advanced operating system and it's the only reason I deducted one star. Hopefully, it will be introduced in an update (edit: the problem was solved through a home automation device that controls the TV via infrared). The other inexplicable bug/negligence is that in order to see Greek information for what the Digea digital channels show, you have to select Greek menus on the TV - which is disappointing for me as I prefer English menus, even though many people probably won't care. Finally, the built-in media player properly plays my movies from the disk and displays external subtitles correctly.
BUILD QUALITY/CONTROLS => Without being heavy, it shows sturdy and quality construction, with legs that inspire confidence. It comes with two remote controls - one large conventional infrared mainly for the TV part (which does everything), and a smaller Bluetooth one with fewer buttons mainly for internet/gaming sources.
Very satisfied overall, and highly recommended for the uses I mentioned, despite the huge omission for me regarding the wake-up feature.