For a computer, always buy a monitor and not a TV. Resolution is not the only deciding factor.
For some good advice on this, check out the Linus tech tips channel on YouTube and look for monitor vs tv. There are several videos about it.
If you are looking for the ultimate monitor and don't mind the expense, get a 49" Ultra-Wide (32:9) monitor.
Make sure the one you get has 1440p vertical resolution.
I bought the Dell 49" last January. So far, love it.
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