It is hard to just tell you what TV you should buy because it depends on what YOU want.
So what do you want? What is your budget. How big TV do you want. Do you want a Smart TV (Netflix etc). What other features do you want? And so on.
Once you know what is your budget, what you want and what kind of features you would like, we can talk more about those features and for example see if they are worth paying for.
Best for you would probably be to just go to a TV shop and have a look at the TV's.
See what you like, what is in your budget.
Go online, read reviews and find a cheaper online store to buy the TV you like from.
@Tylnesh and others from Czech Republic can probably tell you more about the local shops.
I'll just say this.
Are you looking to buy a FullHD (1080p) TV or a 4K TV?
If you are planning to buy a 4K TV:
- make sure TV has HDMI 2.0
- you also need HDMI 2.0 graphics card
Why you need HDMI 2.0 you ask?
Do you want 4K resolution from PC > TV at 60Hz? You need HDMI 2.0.
And as of right now, only Nvidia Maxwell 2.0 graphics cards have HDMI 2.0 native.
Maxwell 2.0 = Geforce 900 series (950, 960, 970, 980, 980 Ti, Titan X)
I hope I will not confuse you with this bit of information.
Another "feature" I would also be on the look out for is called 'chroma subsampling'.
Huh?
Basically chroma subsampling means color compression.
There are different levels of color compression and the most common with movies (bluray) and such is 4:2:0.
4:2:0 level basically means half the "color resolution" for both vertical and horizontal image.
4:4:4 level is full "color resolution" in both vertical and horizontal image.
This 4:4:4 chroma subsampling, is a feature that is not often advertised.
So it is something you have to test yourself! That is one of the reasons I recommend you to go to a TV shop.
So you can see it for yourself. Or you can refer to TV reviews or other user experiences.
Some TV's simply cannot do 4:4:4 chrome subsampling.
Some times it is just plug and play, some times you need enable Game Mode or PC Mode, or change input name to PC on the TV for it to be enabled.
Do YOU need 4:4:4 chrome subsampling?
It depends.
If you just watch TV or movies, no. You do NOT need 4:4:4 TV.
Bluray movies and TV shows and so on, are already chroma subsampled to 4:2:0.
That means the color information is already lost, and a 4:4:4 TV does not benefit you AT ALL.
4:2:0 > 4:4:4. Lower to higher. No benefit.
If you want to use the TV as a monitor, yes. You most likely want a 4:4:4 TV.
The color information from your computer regardless still has the color information, and if you have, for example a TV which is 4:2:0 chroma subsampled, you're basically losing a lot of color information, color resolution and overall fidelity.
The image will look blurry. Some colors will look blurrier than others but generally, the whole image just looks awful in my honest opinion.
4:4:4 > 4:2:0. Higher to lower. Information is lost.
It is subjective though and some TV's are worse compared to others.
This is great thread for information regarding 4:4:4 chroma subsampling.
Too much text and it makes your head hurt? Here's a video which will explain this, less than 5 minutes of your life.