Go for something large screen, like 85 inches or more. However, for the money, a projector makes more sense. Especially the latest LED projectors are excellent value for quality PQ.
However, if it's a TV that you want then the LG OLED series is what you should be looking for, but terribly expensive. I haven't stopped lusting after a 6 lakh model that I saw in a showroom. Absolutely stunning PQ though how much of that actually translates to the standard definition and high definition content that we consume daily remains to be seen.
Another option is the Sony Z9D,
https://www.sony.com/electronics/televisions/xbr-z9d-series.
Make sure, whatever your choice is, comes with HDR, the PQ benefits are stellar in comparison to everything I have seen till date. 4K also makes for a compelling argument in its favor, especially if the upscaler in the TV is good.
PS: But if you are really considering spending a lot of $$$ then I would highly recommend a projector and a proper home theater setup. Once you go with a PJ, you ain't going back to a "normal" TV.