What to look for when buying a TV?

[opethdisciple]

Not really a big TV watcher as I watch everything via PC these days but folks want me to go with them to buy a new TV.

So what do I need to look out for, any big features which it should support for the future etc?

Or is it just the usual DPI, resolution etc ect...

 

[opethdisciple]

So we went in to a store to look at TV's. From the naked eye the LG OLED's looked the best.

But the guy in store ended up pointing us at the Sony BRAVIA KD55AG8BU when I asked him to show me what TV he would buy if he was buying for himself.

What do people think of that TV?